Generation of Nonclassical Photons in a Josephson-Junction Cavity

Takanori Maki, Tetsuo Ogawa and Noriyuki Hatakenaka
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Takanori Maki: Osaka City University, Department of Applied Physics
Tetsuo Ogawa: Tohoku University, Department of Physics
Noriyuki Hatakenaka: NTT Basic Research Laboratories

A chapter in Quantum Communication, Computing, and Measurement, 1997, pp 473-481 from Springer

Abstract: Abstract A novel scheme for generating nonclassical photon states is introduced, which makes the best use of an intrinsic nonlinear interaction between quantized photon fields and Cooper pairs. The relevant system of a single-mode photon field and a tunneling supercurrent in a Josephson junction is described with a two-component boson model, and the quantum dynamics is investigated numerically by using the normal-ordering method. We show that the photon field inside the junction resonator evolves temporally from the vacuum state into quadrature-phase amplitude squeezed states and/or sub-Poissonian states. Backaction to the supercurrent fluctuation is also examined.

Keywords: Josephson Junction; Photon Number; Cooper Pair; Photon State; Quantum Fluctuation (search for similar items in EconPapers)
Date: 1997
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-1-4615-5923-8_51

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DOI: 10.1007/978-1-4615-5923-8_51

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