Physikalisch-Technische Bundesanstalt

2008 - 2007

F. Chiarello, M. G. Castellano, G. Torrioli, S. Poletto, C. Cosmelli, P. Carelli, D. V. Balashov, M. I. Khabipov, A. B. Zorin, "An optimal tunable Josephson element for quantum computing", Appl. Phys. Lett., vol. 93 (4), pp. 042504-1 - 042504-3 (2008).

B. Steck, A. Gonzalez-Cano, N. Feltin, L. Devoille, F. Piquemal, S. Lotkhov, A.B. Zorin, "Characterization and metrological investigation of an R-pump with driving frequencies up to 100MHz", Metrologia, vol. 45 (4), pp. 482-491 (2008).

E. M. Tolkacheva, D. V. Balashov, M. I. Khabipov, A. B. Zorin, "Single flux quantum circuits with damping based on dissipative transmission lines", Supercond. Sci. Technol., vol. 21 (12), 125010 (6 pp) (2008).

H. Scherer, S. V. Lotkhov, G.-D. Willenberg, "Recent progress towards in the setup of the electron counting capacitance standard at PTB," Conference on Precision Electromagnetic Measurements (CPEM 2008), Conference Digest, pp. 278 - 279 (2008).

B. Dimov, D.V. Balashov, M. Khabipov, Th. Ortlepp, F.-Im. Buchholz, A.B. Zorin, J. Niemeyer, F. H. Uhlmann, "Implementation of superconductive passive phase shifters in high-speed integrated RSFQ digital circuits", Supercond. Sci. Technol., vol. 21 (5), 045007-1 - 045007-7 (2008).

M. I. Khabipov, D. V. Balashov, E. Tolkacheva, A. B. Zorin, "Low-noise RSFQ Circuits for a Josephson Qubit Control", J. Phys.: Conf. Ser., 97, 012041-1 - 012041-6 (2008).
(dx.doi.org/10.1088/1742-6596/97/1/012041)

S.V. Lotkhov, V.A. Krupenin, A.B. Zorin, "Cooper pair transport in a resistor-biased Josephson junction array", IEEE Trans. Instrum. Meas., vol. 56 (2), pp. 491-494 (2007).

M. G. Castellano, F. Chiarello, R. Leoni, G. Torrioli, P. Carelli, C. Cosmelli, M. Khabipov, A.B. Zorin, D. Balashov, "Rapid single-flux quantum control of the energy potential in a double SQUID qubit circuit", Supercond. Sci. Technol., vol. 20 (6), pp. 500-505 (2007).

D. Balashov, B. Dimov, M. Khabipov, Th. Ortlepp, D. Hagedorn, A. B. Zorin, F. Im. Buchholz, J. Niemeyer, F. H. Uhlmann, "Passive Phase Shifter for Superconducting Josephson Circuits", IEEE Trans. Appl. Supercond., vol. 17 (2), pp. 142-145 (2007).

V.A. Krupenin, V.O. Zalunin, S.A. Vasenko, A.B. Zorin, "Numerical simulation of electron transport in disordered Cr granular films," Proceedings of 15th Int. Symposium "Nanostructures: Physics and Technology", Novosibirsk, Russia, June 25-29, 2007; pp. 325 - 326, ISBN 5-93634-022-8.

B. Dimov, D. Balashov, M. Khabipov, Th. Ortlepp, F.-Im. Buchholz, A. B. Zorin, J. Niemeyer, F. H. Uhlmann, "Superconductive passive phase shifter for integrated RSFQ digital circuits", Supercond. Sci. Technol., vol. 20 (11), pp. S332-S335 (2007). 

2006 - 2005

F.-Im. Buchholz, J. Kohlmann, M. Khabipov, C.M. Brandt, D. Hagedorn, D. Balashov, F. Maibaum, E. Tolkacheva, J. Niemeyer, "Integrierte digitale supraleitende Logikschaltungen für den Quanten-Synthesizer- Bericht über das BMBF-Vorhaben 13N8412", PTB-Bericht PTB-E-93, Braunschweig 2006.

E. Tolkacheva, M. Khabipov, D. Hagedorn, F-Im. Buchholz, J. Kohlmann, J. Niemeyer, "Development of RSFQ circular memories for arbitrary AC waveform synthesisers", 51. IWK Internationales Wissenschaftliches Kolloquium, TU Ilmenau, 11.-15.09.2006, Proccedings pp. 155-156; CD-ROM, file name: papers_iwk\3_5_8.pdf, Peter Scharff TU Ilmenau (Hrsg.), ISBN 3-938843-15-2, ISBN 3-938843-16-0, 2006.

S.V. Lotkhov, E. Tolkacheva, D.V. Balashov, M.I. Khabipov, F.-Im. Buchholz, A.B. Zorin, "Low hysteretic behavior of Al/AlOx/Al Josephson junctions", Appl. Phys. Lett., vol. 89 (13), pp. 132115-1 - 132115-3, 2006. (doi:10.1063/1.2357915)

S.V. Lotkhov, D.V. Balashov, M.I. Khabipov, F.-Im. Buchholz, A.B. Zorin, "Subgap conductivity in SIN-junctions of high barrier transparency", Physica C, vol. 449 (2), pp. 81 - 86, 2006.

A.B. Zorin, E. Tolkacheva, M.I. Khabipov, F.-Im. Buchholz, J. Niemeyer, "Dynamics of Josephson junctions and single-flux-quantum networks with superconductor-insulator-normal metal junction shunts", Phys. Rev. B, vol., 74, pp. 014508-1 - 014508-7, 2006. (doi:10.1103/PhysRevB.74.014508)

H.J.M. ter Brake, F.-Im. Buchholz, G. Burnell, T. Claeson, D. Crété, P. Febvre, G.J. Gerritsma, H. Hilgenkamp, R. Humphreys, Z. Ivanov, W. Jutzi, M.I. Khabipov, J. Mannhart, H.-G. Meyer, J. Niemeyer, A. Ravex, H. Rogalla, M. Russo, J. Satchell, M. Siegel, H. Töpfer, F.H. Uhlmann, J. C. Villégier, E. Wikborg, D. Winkler, A.B. Zorin, "SCENET roadmap for superconductor digital electronics", Physica C, vol. 439, pp. 1-42, 2006. (doi:10.1016/j.physc.2005.10.017)

B. Dimov, V. Todorov, V. Mladenov, M. Khabipov, D. Balashov, D. Hagedorn, F.-Im. Buchholz, J. Niemeyer, F.H. Uhlmann, "An improved technique for design of Josephson transmission lines", Supercond. Sci. Technol., vol. 19, pp. S213 - S216, 2006. (doi:10.1088/0953-2048/19/5/S10)

M. Khabipov, D. Hagedorn, F.-Im. Buchholz, J. Kohlmann, F. Maibaum, M. Schilling, J. Niemeyer, "Development of RSFQ voltage drivers for arbitrary AC waveform synthesisers", Institute of Physics Publishing, J. of Physics: Conf Ser. vol. 43, pp. 1175-1178, 2006. (doi:10.1088/1742-6596/43/1/286)

B. Dimov, M. Khabipov, D. Balashov, C.M. Brandt, F.-Im. Buchholz, J. Niemeyer, F.H. Uhlmann, "Universal asynchronous RSFQ gate for realization of Boolean functions of dual-rail binary variables", Institute of Physics Publishing, J. of Physics: Conf Ser. vol. 43, pp. 1183-1186, 2006. (doi:10.1088/1742-6596/43/1/288)

F.-Im. Buchholz, D.V. Balashov, R. Dolata, D. Hagedorn, M.I. Khabipov, J. Kohlmann, A.B. Zorin, J. Niemeyer, "LTS junction technology for RSFQ and qubit circuit applications", Physica C, vol. 445-448, pp. 930-936, 2006. (doi:10.1016/j.physc.2006.05.059)

F. Maibaum, "Simulation und Entwurf von integrierten digitalen Supraleiterschaltungen", Diplomarbeit, Technische Universität Braunschweig, Institut für Elektrische Messtechnik und Grundlagen der Elektrotechnik, 21.12.2005.

B. Dimov, M. Khabipov, D. Balashov, C.M. Brandt, F.-Im. Buchholz, J. Niemeyer, F.H. Uhlmann, "An asynchronous rapid single-flux-quantum demultiplexer based on dual-rail information coding", Supercond. Sci. Technol., vol. 18, pp. 644-647, 2005. (doi:10.1088/0953-2048/18/5/011)

B. Dimov, M. Khabipov, D. Balashov, C.M. Brandt, F.-Im. Buchholz, J. Niemeyer, F.H. Uhlmann, "Tuning of the RSFQ gate speed by different McCumber parameters of the Josephson junctions", IEEE Trans. Appl. Supercond., vol. 15, pp. 284-287, 2005. (doi:10.1109/TASC.2005.849791)

B. Dimov, M. Khabipov, D. Balashov, C.M. Brandt, F.-Im. Buchholz, J. Niemeyer, F.H. Uhlmann, "Investigation of the parasitic coupling effects in densely packaged RSFQ logic circuits", IEEE Trans. Appl. Supercond., vol. 15, pp. 396-399, 2005. (dx.doi.org/10.1109/TASC.2005.849859)

D.V. Balashov, M.I. Khabipov, A.B. Zorin, S. Bogoslovsky, F.-Im. Buchholz, J. Niemeyer, "Characterization of SIN junctions as non-linear damping elements for RSFQ - qubit circuits", Extended Abstracts, 10th International Superconductive Electronics Conference, ISEC 2005, P-C.06, Noordwijkerhout, NL, 2005.

F. Chiarello, P. Carelli, M.G. Castellano, C. Cosmelli, M.I. Khabipov, R. Leoni, G. Torrioli, A.B. Zorin, "Tunable flux qubits controlled by rapid single flux quantum logic: considerations and perspectives", Extended Abstracts, 10th International Superconductive Electronics Conference, ISEC 2005, P-C.04, Noordwijkerhout, NL, 2005.

B. Dimov, V. Todorov, V. Mladenov, M. Khabipov, D. Balashov, D. Hagedorn, F.-Im. Buchholz, J. Niemeyer, F.H. Uhlmann, "An improved technique for design of Josephson transmission lines", Extended Abstracts, 10th International Superconductive Electronics Conference, ISEC 2005, P-I.04, Noordwijkerhout, NL, 2005.

A.B. Zorin, M.I. Khabipov, D.V. Balashov, R. Dolata, F.-Im. Buchholz, J. Niemeyer, "Josephson junctions with nonlinear damping for rapid single-flux-quantum - qubit circuits", Appl. Phys. Lett., vol. 86 (3), pp. 032501-1 - 032501-3, 2005. 

2004 - 2002

M. Khabipov, F.-Im. Buchholz, J. Niemeyer, H.-G. Meyer, G. Wende, "Code driven devices based on RSFQ circular shift registers", in: Applied Superconductivity 2003, Proc. 6th Europ. Conf. on Appl. Supercond., Institute of Physics Conf. Ser., vol. 181, pp. 3459-3464, 2004.

D. Balashov, "Development and investigation of double-barrier Josephson junctions and their implementation in superconductor electronics", Dissertation, State Scientific and Technical Library, Moscow, Russia, 2004.

D. Hagedorn, "Physical and Technological Limitations of SNS Josephson Junctions for Lareg-Scale Integration Low-temperature Superconductor Circuits", PTB-Bericht PTB-E-86, Braunschweig, 2004.

J. Kohlmann, R. Behr, M.I. Khabipov, F. Müller, D. Balachov, T. Funck, F.-Im. Buchholz, J. Niemeyer, "Anwendungen des Quantenvoltmeters in der Präzisionsmesstechnik", Supraleitung und Tieftemperaturtechnik, Tagungsband, 8. Statusseminar, VDI-Technologiezentrum Physikalische Technologien (VDI-TZ) Köln, VDI Verlag Düsseldorf, CD-ROM, Manuskript20.pdf, 2003.

D. Hagedorn, "Physikalische und technologische Limitierungen von SNS-Josephson-Kontakten für hochintegrierbare Tieftemperatur-Supraleiterschaltungen", Dissertation, Thüringische Landes- und Universitätsbibliothek (2003).

D. Hagedorn, M.I. Khabipov, R. Dolata, F.-Im. Buchholz, J. Niemeyer, "SNS Technology Process for Ramp Junction Based Digital Superconducting Circuits," IEEE Trans. Appl. Supercond., vol. 13 (2), pp. 1096-1099, 2003.
http://www.db-thueringen.de/servlets/DocumentServlet?id=992

J. Kohlmann, M.I. Khabipov, R. Behr, H. Schulze, F. Müller, O. Kieler, D. Balachov, T. Funck, F.-Im. Buchholz, J. Niemeyer, "Untersuchung von integrierten Schaltkreisen und Messsystemen für das Quantenvoltmeter", Bericht über ein BMBF-Vorhaben, PTB-Bericht PTB-E-80, Braunschweig 2002.

M.I. Khabipov, D. Balashov, F.-Im. Buchholz, J. Niemeyer, "Bit error rate experiments with RSFQ circuits realized in SINIS technology," Physica C, vol. 372-376, pp. 136-138, 2002.

D. Hagedorn, R. Dolata, F.-Im. Buchholz, J. Niemeyer, "Properties of SNS Josephson junctions with HfTi interlayers," Physica C, vol. 372-376, pp. 7-10, 2002. 

2001 - 2000

J.-K. Heinsohn, R. Dittmann, J. Rodríguez Contreras, E. Goldobin, A. M. Klushin, M. Siegel, D. Hagedorn, R. Pöpel, R. Dolata, F.-Im. Buchholz, J. Niemeyer, "Effect of the magnetic-field orientation on the modulation period of the critical current of ramp-type Josephson junctions", J. Appl. Phys., vol. 90, No. 9, pp. 4623-4631, 2001.

F. Müller, H. Schulze, R. Behr, O. Kieler, B. Egeling, J. Kohlmann, M. Khabipov, D. Balashov, I.Y. Krasnopolin, F.-Im. Buchholz, J. Niemeyer, "Optimized voltage standard arrays and on-chip frequency divider both in SINIS technology", Ext. Abstr. ISEC´01, Osaka, pp. 225-226, 2001.

D. Hagedorn, R. Dolata, R. Pöpel, F.-Im. Buchholz, J. Niemeyer, "Development of sub-micron SNS ramp-type Josephson junctions", IEEE Trans. Appl. Supercond., vol. 11, No. 1, pp. 1134-1137, 2001.

M. Khabipov, D. Balashov, F.-Im. Buchholz, and J. Niemeyer, "High-frequency performance of RSFQ circuits realized in SINIS technology", IEEE Trans. Appl. Supercond., vol. 11, No. 1, pp. 1074-1077, 2001.

D. Balashov, M. Khabipov, F.-Im. Buchholz, J. Niemeyer, "SINIS process development for integrated circuits with characteristic voltages exceeding 250 µV", IEEE Trans. Appl. Supercond., vol. 11, No. 1, pp. 1070-1073, 2001.

F.-Im. Buchholz, D. Balashov, M.I. Khabipov, D. Hagedorn, R. Dolata, R. Pöpel, J. Niemeyer, "Development of highly integrated RSFQ circuits on the basis of intrinsically shunted Josephson junctions", Physica C, vol. 350, pp. 291-301, 2001.

D. Balashov, F.-Im. Buchholz, H. Schulze, M. I. Khabipov, R. Dolata, M. Kupriyanov, J. Niemeyer, "Stationarity properties of SINIS double-barrier Josephson junctions", Supercond. Sci. Technol., vol. 13, pp. 244-250, 2000.

R. Pöpel, D. Hagedorn, F.-Im. Buchholz, J. Niemeyer, "SNS ramp-type Josephson junctions for highly integrated superconducting circuit applications", in Applied Superconductivity, Inst. Phys. Conf. Ser. No. 167, pp. 277-280, 2000.

F.-Im. Buchholz, W. Kessel, "Supraleitende Schaltungen in extrem verlustarmer RSFQ-Impulslogik für Anwendungen in der HF-Präzisionsmeßtechnik", Kleinheubacher Berichte 43, pp. 320 - 328, 2000.

R. Pöpel, D. Hagedorn, T. Weimann, F.-Im. Buchholz, J. Niemeyer, "Superconductor- normal metal-superconductor process development for the fabrication of small Josephson junctions in ramp-type configuration", Supercond. Sci. Technol., vol. 13, pp. 148-153, 2000. 

1999 - 1998

M.I. Khabipov, D. Balashov, F.-Im. Buchholz, W. Kessel, J. Niemeyer, "RSFQ circuitry realized in a SINIS technology process", IEEE Trans. Appl. Supercond., vol. 9, No. 4, pp. 4682-4687, 1999.

D. Balashov, M.I. Khabipov, F.-Im. Buchholz, W. Kessel, J. Niemeyer, "SINIS fabrication process for realizing integrated circuits in RSFQ impulse logic", Ext. Abstr. ISEC´99, Claremont, pp. 238-240, 1999; and: Supercond. Sci. Technol., vol. 12, pp. 864-867, 1999.

F.-Im. Buchholz, W. Kessel, "RSFQ impulse logic circuitry for future applications in high frequency metrology", Physica C, vol. 326-327, pp. 111-121, 1999.

M.I. Khabipov, W. Kessel, F.-Im. Buchholz, R. Dolata, J. Niemeyer, "Bit error rate experiments in ring-shaped RSFQ circuits", Applied Superconductivity, vol. 6, Nos. 10-12, pp. 719-725, 1998.

D. Balashov, F.-Im. Buchholz, H. Schulze, M.I. Khabipov, W. Kessel, J. Niemeyer, "Superconductor-insulator-normalconductor-insulator-superconductor (Nb/Al_xO_y/Al/Al_xO_y/Nb) process development for integrated circuit applications", Supercond. Sci. Technol., vol. 11, pp. 1401-1407, 1998.

R. Dolata, D. Balashov, "Platinum thin film resistors with Cr under- and overlayers for the Nb/AlO_X/Nb technology", Physica C, vol. 295, pp. 247-250, 1998. 

1997 - 1996

F.-Im. Buchholz, W. Kessel, M.I. Khabipov, R. Dolata, J. Niemeyer, A.Yu. Kidiyarova-Shevchenko, "Measurement of RSFQ pulse propagation by specially designed shift registers", Applied Superconductivity 1997, Proc. of the 3rd Europ. Conf. on Appl. Supercond. EUCAS'97, Eindhoven (The Netherlands), Inst. Phys. Conf. Ser. No. 158, vol. 1, pp. 433-436, IOP Publishing Ltd. Bristol and Philadelphia (1997).

W. Kessel, F.-Im. Buchholz, M. I. Khabipov, R. Dolata, J. Niemeyer, "Entwicklung und Herstellung komplexer RSFQ-Impulslogikbausteine, Schwerpunkt: Schieberegister - Bericht über ein BMBF-Vorhaben, PTB-Bericht PTB-E-57, Braunschweig (1997).

J. Niemeyer, W. Kessel, J. Kohlmann, F.-Im. Buchholz, "Entwurf eines Josephson-Spannungsnormals mit integriertem RSFQ-Frequenzteiler", PTB-Mitteilungen 107, No. 5, pp. 333-334, 1997.

M.I. Khabipov, W. Kessel, F.-Im. Buchholz, R. Dolata, J. Niemeyer, "Bit error rate experiments in ring-shaped RSFQ circuits", Extended Abstracts of the 6th Internat. Supercond. Electron. Conf. ISEC'97, D 46, pp. 335-337, Berlin (1997).

W. Kessel, F.-Im. Buchholz, M.I. Khabipov, R. Dolata, J. Niemeyer, "Development of an RSFQ shift register for applications in RF noise power metrology", IEEE Trans. Instrum. Meas., vol. IM-46, pp. 477-481, 1997.

J. Niemeyer, W. Kessel, F.-Im. Buchholz, R. Dolata, M.I. Khabipov, "RSFQ pulse logic in LTS-superconducting technology: basis for digital circuit applications at high frequencies", Extended Abstracts of the 5th Internat. Workshop on High-Temp. Supercond. Electron. Devices HTSED'97, FED-Report, FED-157, DG-2, pp. 17-20, Matsuyama City, Japan (1997).

W. Kessel, "Development of superconducting circuits in RSFQ logic for applications in RF noise power metrology", in: Proc. of the IEEE Workshop RF and Microwave Noise, Fachgebiet Mikrowellentechnik, TU Ilmenau, pp. 44-49, 1996.

M.I. Khabipov, R. Dolata, F.-Im. Buchholz, W. Kessel, J. Niemeyer, "Direct current to 350 GHz operation of rapid-single-flux-quantum T flipflop circuits in niobium technology", Supercond. Sci. Technol., vol. 9, pp. 822-825, 1996.

R. Dolata, M.I. Khabipov, A. Yu. Kidiyarova-Shevchenko, F.-Im. Buchholz, W. Kessel, J. Niemeyer, "Development and fabrication of complex RSFQ logic circuits: shift registers for pseudo random noise generator applications", in: Supraleitung und Tieftemperaturtechnik, Tagungsband, 5. Statusseminar, VDI- Technologiezentrum Physikalische Technologien (VDI-TZ) Köln, VDI Verlag Düsseldorf, pp. 205-208 (1996). 

1995 - 1994

R. Dolata, M.I. Khabipov, F.-Im. Buchholz, W. Kessel, J. Niemeyer, "Nb/Al₂O₃ Al/Nb process development for the fabrication of fast-switching circuits in RSFQ logic", Applied Superconductivity 1995, Proc. of the 2nd Europ. Conf. on Appl. Supercond. EUCAS'95, Edinburgh, Scotland, Inst. Phys. Conf. Ser. No. 148, vol. 2, pp. 1709-1712, IOP Publishing Ltd. Bristol and Philadelphia (1995).

M.I. Khabipov, R. Dolata, F.-Im. Buchholz, W. Kessel, J. Niemeyer, "Experimental investigations of the performance of RSFQ T flipflops in diverse frequency domains of operation", Applied Superconductivity 1995, Proc. of the 2nd Europ. Conf. on Appl. Supercond. EUCAS'95, Edinburgh, Scotland, Inst. Phys. Conf. Ser. No. 148, vol. 2, pp. 1705-1708, IOP Publishing Ltd. Bristol and Philadelphia (1995).

M.I. Khabipov, R. Dolata, F.-Im. Buchholz, W. Kessel, J. Niemeyer, "Experimental investigations of RSFQ logic circuits realized by a Nb/Al₂O₃ Al/Nb technology process", Extended Abstracts of the 1995 Internat. Supercond. Electron. Conf. ISEC'95, 3-3, pp. 31-33, Nagoya, Japan (1995).

R. Dolata, M.I. Khabipov, F.-Im. Buchholz, W. Kessel, J. Niemeyer, "Technology of the fabrication and experimental investigation of basic RSFQ circuits", Com. Consult. ' d'Electricité CCE, 20e Session, Doc. CCE/95-49, Sèvres, France (1995).

R. Dolata, M. I. Khabipov, F.-Im. Buchholz, W. Kessel, J. Niemeyer, "Development of a Shift Register in RSFQ Logic for Pseudo Random Noise Generators", in: Supraleitung und Tieftemperaturtechnik, Tagungsband, 4. Statusseminar, VDI-Technologiezentrum Physikalische Technologien (VDI-TZ) Köln, VDI Verlag Düsseldorf, pp. 98-101, (1994).