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Entangled quantum clocks for measuring proper-time difference |
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| Authors: | W Y Hwang D Ahn S W Hwang Y D Han |
| Institution: | (1) Institute of Quantum Information Processing and Systems, University of Seoul, 90 Jeonnong, Tongdaemoon, Seoul 130-743, Korea, KR;(2) Division of Semiconductor, Electricity, and Automobile Engineering, Woosuk University, 490 Hujeong, Samrye, Wanju, Cheonbuk 565-701, Korea, KR |
| Abstract: | We report that entangled pairs of quantum clocks (non-degenerate quantum bits) can be used as a specialized detector for precisely measuring difference of proper-times that each constituent quantum clock experiences. We describe why the proposed scheme would be more precise in the measurement of proper-time difference than a scheme of two-separate-quantum-clocks. We consider possibilities that the proposed scheme can be used in precision test of the relativity theory. Received 7 November 2001 |
| Keywords: | PACS 03 67 -a Quantum information – 06 30 Ft Time and frequency – 04 80 Cc Experimental tests of gravitational theories |
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