aqora

Applying precision time and frequency techniques to path-entangled quantum networks

Tara M. Fortier

Optical and Quantum Sensing and Precision Metrology IIMar 5, 20260 citations

The Mercury Ion Optical Clock

Windell H. Oskay, Till Rosenband, U. Tanaka +5 more

The SI second is the most accurately realized of the base units, and time intervals can therefore be measured more precisely than any other fundamental quantity. Precision timing information from atomic clocks provides the backbone of such ubiquitous technologies as electrical power grids, wireless phone networks and the global positioning system. Today's best time and frequency standards, cesium fountain atomic clocks, have uncertainty at the level of about two nanoseconds per month. The search for yet more accurate and stable frequency standards has now led to the development of optical-frequency atomic clocks.The SI second is the most accurately realized of the base units, and time intervals can therefore be measured more precisely than any other fundamental quantity. Precision timing information from atomic clocks provides the backbone of such ubiquitous technologies as electrical power grids, wireless phone networks and the global positioning system. Today's best time and frequency standards, cesium fountain atomic clocks, have uncertainty at the level of about two nanoseconds per month. The search for yet more accurate and stable frequency standards has now led to the development of optical-frequency atomic clocks.

APSMay 1, 20040 citations

Modeling of atomic systems for atomic clocks and quantum information

Bindiya Arora

Jan 1, 20080 citations

The quantum timekeeping of atomic clocks

Physics TodayApr 2, 20100 citations

Dissemination of Optical Frequency for Future Telecom Networks and Applications

Lakshmi Rajagopal, Andrew Lord, Mike Gilson +1 more

Optical atomic lattice clocks are a precise source for time with frequency accuracy to a few parts in 10-18. The optical frequency from these clocks needs to be disseminated over a fiber to make them fit for different applications. The paper investigates a methodology for disseminating optical frequency over a fiber by sending the operative frequency as the beat frequency of a heterodyne signal. The work details results obtained using this technique for frequency transfer over several kilometers of fiber in the lab and real environment.Optical atomic lattice clocks are a precise source for time with frequency accuracy to a few parts in 10-18. The optical frequency from these clocks needs to be disseminated over a fiber to make them fit for different applications. The paper investigates a methodology for disseminating optical frequency over a fiber by sending the operative frequency as the beat frequency of a heterodyne signal. The work details results obtained using this technique for frequency transfer over several kilometers of fiber in the lab and real environment.

Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS)May 15, 20230 citations

A quantum network of clocks

P. Kómár, E. M. Kessler, Michael Bishof +4 more

arXiv:1310.6045Nature PhysicsJun 13, 2014767 citations

Precision time and frequency techniques for atomic clock and quantum networks

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