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coherence time

   Also found in: Wikipedia 0.01 sec.
coherence time [kō′hir·əns ‚tīm]
(physics)
The average time required for the relative phase of two waves, or the phase of a single wave, to fluctuate appreciably.
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Active optical clocks provide several new possibilities of applications: (i) more stable optical clock than any current atomic clocks; (ii) sub-natural linewidth laser spectroscopy; (iii) long coherence time laser with linewidth at mHz level; (iv) Ramsey laser combining stimulated emission process and Ramsey separated oscillatory fields method," commented Professor Yiqiu Wang.
Scientists propose active optical clock by Asian News International
Josephson junctions are good candidates for a quantum computer with recent experiments demonstrating reasonably long coherence times, state preparation, manipulation and measurement, and coupling of qubits for even-tual gate operations.
Source of decoherence in Josephson qubits indentified by NIST ... by Journal of Research of the National Institute of Standards and Technology
The incredibly long coherence times of atomic hyperfine states make them ideally suited for frequency standards and quantum information processing.
A new spin on condensed-matter physics using two-level atoms. ... by Journal of Research of the National Institute of Standards and Technology
 
 
 
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