Optical: systems and elements – Optical computing without diffraction – Logic gate
Reexamination Certificate
2008-09-23
2010-11-02
Amari, Alessandro (Department: 2872)
Optical: systems and elements
Optical computing without diffraction
Logic gate
C708S191000
Reexamination Certificate
active
07826115
ABSTRACT:
An (N+1) number of physical systems each having five energy levels |0>, |1>, |2>, |3>, and |4>, a qubit being expressed by |0> and |1>, are provided in an optical cavity having a cavity mode resonant with |2>-|3>, such that an N number of control systems and a target system are prepared. The target system is irradiated with light pulses resonant with |0>-|4>, |1>-|4>, and |2>-|4> to change a superposed state |c> to |2>. All of the physical systems are irradiated with light pulses resonant with |0>-|3> and |1>-|3>, and a phase of the light pulse resonant with the target system is shifted by a specific value dependent on a unitary transformation U. The target system is irradiated with light pulses resonant with |0>-|4>, |1>-|4>, and |2>-|4>, with a phase difference between them being set to a specific value dependent on the unitary transformation U, to return |2> to |c>.
REFERENCES:
patent: 6671710 (2003-12-01), Ovshinsky et al.
patent: 6800837 (2004-10-01), Ichimura et al.
patent: 7126106 (2006-10-01), Goto et al.
patent: 7359101 (2008-04-01), Beausoleil et al.
patent: 2004/0200950 (2004-10-01), Beausoleil et al.
patent: 2007/0145348 (2007-06-01), Ichimura et al.
patent: 2008/0192315 (2008-08-01), Goto et al.
T. Pellizzari, et al., “Decoherence Continuous Observation, and Quantum Computing: A Cavity QED Model”, Physical Review Letters, vol. 75, No. 21, Nov. 20, 1995, pp. 3788-3791.
Jiannis Pachos, et al., “Quantum Computation with Trapped Ions in an Optical Cavity”, Physical Review Letters, vol. 89, No. 18, Oct. 28, 2002, 4 pages.
V. Giovannetti, et al., “Scalable quantum computation with cavity QED systems”, Physical Review A, vol. 62, Aug. 15, 2000, 11 pages.
M.A. Nielsen, et al., “Universal quantum gates”, Quantum Computation and Quantum Information, 2000, pp. 188-193.
L. You, et al., “Quantum logic between atoms inside a high-Q optical cavity”, Physical Review A, vol. 67, Mar. 25, 2003, 4 pages.
Goto Hayato
Ichimura Kouichi
Amari Alessandro
Kabushiki Kaisha Toshiba
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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