Quantum information processing method and apparatus

Optical waveguides – Having nonlinear property

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C700S244000, C706S014000

Reexamination Certificate

active

10487980

ABSTRACT:
A method and apparatus for quantum information processing is disclosed in which logical qubits |0>Land |1>Lare respectively encoded by different near orthogonal coherent states |β> and |α>, where <α|β>=0, |α> and |β> being the computational basis states for the qubits, for example, in which logical qubits |0>Land |1>Lare respectively encoded by different ones of the vacuum state |0> and a multi-photon optical coherent state |α> which states are the computational basis states for the qubits. This provide an efficient scheme for linear optics quantum processing which is deterministic and for which qubit readout can use homodyne detection which is highly efficient. The invention finds application in quantum computation and quantum communication.

REFERENCES:
patent: 5917322 (1999-06-01), Gershenfeld et al.
patent: 6578018 (2003-06-01), Ulyanov
patent: 7113967 (2006-09-01), Cleve et al.
patent: 2002/0199108 (2002-12-01), Chuang et al.
patent: 2003/0005010 (2003-01-01), Cleve et al.
patent: WO99/53410 (1999-10-01), None
Cochran et al., ‘Macroscopically distinct quantum-superposition states as a bosonic code for amplitude damping’, the American Physical Society, 1999, vol. 59, No. 4, (pp. 2631-2634).
Brune, M., et al., “Observing the Progressive Decoherence of the ‘Meter’ in a Quantum Measurement,”Physical Review Letters, vol. 77, No. 24, pp. 4887-4890 (Dec. 9, 1996).
Cochrane, P.T., et al., “Macroscopically Distinct Quantum-Superposition States as a Bosonic Code for Amplitude Damping,”Physical Review A, vol. 59, No. 4, pp. 2631-2634 (Apr. 1999).
Furusawa, A., et al., “Unconditional Quantum Teleportation,”Science, vol. 282, pp. 706-709 (Oct. 23, 1998).
Knill, E., et al., “A Scheme for Efficient Quantum Computation With Linear Optics,”Nature, vol. 409, pp. 46-52 (Jan. 4, 2001).
Kwiat, P.G., et al., “Ultrabright Source of Polarization-Entangled Photons,”Physical Review A, vol. 60, No. 2, pp. R773-R776 (Aug. 1999).
Reggiani, S., et al., “Two-Qbit Gates Based on Coupled Quantum Wires,”International Conference on Simulation Semiconductor Processes and Devices, Seattle, Washington, pp. 184-187 (Sep. 6-8, 2000).
Rieffel, E., “An Introduction to Quantum Computing for Non-Physicists,” INTERNET: <http://arxiv.org/quant-ph/9809016> pp. 1-45 (Jan. 19, 2000).
Tittel, W., et al., “Experimental Demonstration of Quantum Correlations Over More Than 10km,”Physical Review A, vol. 57, No. 5, pp. 3229-3232 (May 1998).
Turchette, Q.A., et al., “Measurement of Conditional Phase Shifts for Quantum Logic,”Physical Review Letters, pp. 1-4 (Dec. 1995).
Zeilinger, A., “Fundamentals of Quantum Information,”Physics World, vol. 11, No. 3, pp. 35-40 (Mar. 1998).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Quantum information processing method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Quantum information processing method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum information processing method and apparatus will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3937051

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.