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A Hermitian Opetator Conjugate to Two-Mode Number-Difference Operator |
FAN Hong-yi;WANG Yi-hua |
Department of Material Science and Engineering, University of Science and Technology of China, Hefei 230026 |
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Cite this article: |
FAN Hong-yi, WANG Yi-hua 1998 Chin. Phys. Lett. 15 391-392 |
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Abstract For the Shapiro-Wagner-Hradil phase detection description the canonical commutation relation between phase angle ψ and two-mode number-difference operator D = a†a - b†b is constructed. Departing from [ψ, D] = -i, the phase angle Hermitian operator is derived in the newly obtained representation < ξ |, where | ξ > is the common eigenket of a + b† and b + a†.
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Keywords:
03.65.-w
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Published: 01 June 1998
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