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Quantum technology

Quantum technologies are widely on the rise towards becoming part of daily life. Super sensitive sensors in medicine and technology as well as ultra-stable and precise optical atomic clocks are already examples of their applications. PTB plays a leading role worldwide in many of these areas.

Quantum logic spectroscopy unlocks potential of highly charged ions

Scientists have carried out pioneering optical measurements of highly charged ions with unprecedented precision. This opens up the multitude of highly charged ions for novel atomic clocks and further avenues in the search for new physics.

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Jens Frahm an einem MRT-Gerät

Most prestigious German technology prize awarded to Jens Frahm

The physicist Jens Frahm has revolutionized MRI technology – even to the point of realizing videos of beating hearts – and is receiving the Werner von Siemens Ring for it.

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Robust Operations for Quantum Computers

A functional quantum computer is one of the most intriguing promises of quantum technology. A new method based on trapped ions reduces error rates and provides reliable operations much faster.

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A question of pressure

PTB scientists have developed a new primary method for the measurement of pressure based on electrical measurements carried out on helium gas (Nature Physics)

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PTBnews 3.2019

PTBnews 3.2019

Three times a year, PTB News provides topical information from the varied spectrum of activities of the Physikalisch-Technische Bundesanstalt (PTB) consisting of fundamental research, legal metrology and PTB's various activities in the service of the economy.
maßstäbe 13 (in German only)

maßstäbe 13 (in German only)

This issue of maßstäbe ("Alltag in Maßen" - "Everyday Measurements") invites you to a journey which starts in our body and does not end in all sorts of networks.
PTB-Mitteilungen 4.2017

PTB-Mitteilungen 4.2017

Issue 4: Metrology for the Digitalization of the Economy and Society
After nearly 130 years of service, the international prototype of the kilogram is expected to be retired in the fall of 2018 (at the General Conference on Weights and Measures). The Avogadro experiment, which aims to determine the number of atoms contained in a near-perfect silicon sphere, is a cornerstone of the redefinition of the kilogram.

Titelseite JB 2017

The Annual Report is published every spring and reports on PTB's work in the past year. The full version is to be found here on the Internet; excerpts from it are also available as a printed brochure.

DFG-Project „Bayesian compressed sensing for nanoscale chemical mapping in the mid-infrared regime“ has started [ more ]

Nanoskalige magnetische Feldmessungen: wie kalibriert man am besten? [ more ]

Honorary membership of the Ioffe-Institute St. Petersburg [ more ]

Round robin comparison study on the form measurement of optical freeform surfaces [ more ]

Influence of mounting on the optical surface figure in optical reference surfaces [ more ]

PTB scientists have developed a new primary method for the measurement of pressure based on electrical measurements carried out on helium gas [ more ]

Der Meter aus dem Kristall: alternativer Zugang zu Längenmessungen im Nanometerbereich [ more ]

UHV-STM zur Charakterisierung von Präzisionsnormalen für den Nanometerbereich [ more ]

Nationaler Ringvergleich zur Bestimmung von Rauheitskenngrößen an Raunormalen und Tiefeneinstellnormalen [ more ]

Materialprüfung zur Verifizierung mechanischen Eigenschaften von additiv gefertigten Bauteilen [ more ]

PTB - The National Metrology Institute of Germany

PTB's profile of tasks

In Braunschweig and Berlin, time comes from atomic clocks, lengths are measured far into the nano-world, scientists do research on fundamental questions concerning the physical units, and the employees in the laboratories calibrate measuring instruments, meeting the most demanding requirements. Therefore, the Physikalisch-Technische Bundesanstalt is among the top names in metrology worldwide. As Germany's national metrology institute, PTB is Germany's highest authority when it comes to correct and reliable measurements. It is the supreme technical authority of the Federal Ministry for Economic Affairs and Energy (BMWi) and employs a total of approx. 1900 staff members. PTB operates an integrated Opens internal link in current windowquality management system which covers the four interlinked field of business. (Initiates file downloadSelf-Declaration on quality management).

Corporate logo of the Federal Ministry for Economic Affairs and Energy

The Physikalisch-Technische Bundesanstalt, the National Metrology Institute of Germany, is a scientific and technical higher federal authority falling within the competence of the Federal Ministry for Economic Affairs and Energy.