Analog processor comprising quantum devices

Details Analog processor comprising quantum devices Analog processor comprising quantum devices

2011-08-30

2011-08-30

Ismail, Shawki S (Department: 2819)

Electronic digital logic circuitry

Superconductor

Tunneling device

C326S005000, C706S010000, C706S014000

Reexamination Certificate

active

08008942

ABSTRACT:
Analog processors for solving various computational problems are provided. Such analog processors comprise a plurality of quantum devices, arranged in a lattice, together with a plurality of coupling devices. The analog processors further comprise bias control systems each configured to apply a local effective bias on a corresponding quantum device. A set of coupling devices in the plurality of coupling devices is configured to couple nearest-neighbor quantum devices in the lattice. Another set of coupling devices is configured to couple next-nearest neighbor quantum devices. The analog processors further comprise a plurality of coupling control systems each configured to tune the coupling value of a corresponding coupling device in the plurality of coupling devices to a coupling. Such quantum processors further comprise a set of readout devices each configured to measure the information from a corresponding quantum device in the plurality of quantum devices.

REFERENCES:
patent: 6437413 (2002-08-01), Yamaguchi et al.
patent: 6597010 (2003-07-01), Eriksson et al.
patent: 6627915 (2003-09-01), Ustinov et al.
patent: 6670630 (2003-12-01), Blais et al.
patent: 6784451 (2004-08-01), Amin et al.
patent: 6822255 (2004-11-01), Tzalenchuk et al.
patent: 6885325 (2005-04-01), Omelyanchouk et al.
patent: 6897468 (2005-05-01), Blais et al.
patent: 6960780 (2005-11-01), Blais et al.
patent: 6979836 (2005-12-01), Zagoskin et al.
patent: 6987282 (2006-01-01), Amin et al.
patent: 7015499 (2006-03-01), Zagoskin
patent: 7109593 (2006-09-01), Freedman et al.
patent: 7277872 (2007-10-01), Raussendorf et al.
patent: 2002/0121636 (2002-09-01), Amin et al.
patent: 2003/0055513 (2003-03-01), Raussendorf et al.
patent: 2003/0107033 (2003-06-01), Tzalenchuk et al.
patent: 2003/0121028 (2003-06-01), Coury et al.
patent: 2003/0169041 (2003-09-01), Coury et al.
patent: 2003/0173498 (2003-09-01), Blais et al.
patent: 2004/0000666 (2004-01-01), Lidar et al.
patent: 2004/0016918 (2004-01-01), Amin et al.
patent: 2004/0119061 (2004-06-01), Wu et al.
patent: 2004/0140537 (2004-07-01), Il'ichev et al.
patent: 2005/0224784 (2005-10-01), Amin et al.
patent: 2005/0250651 (2005-11-01), Amin et al.
patent: 2005/0256007 (2005-11-01), Amin et al.
patent: WO 02/27653 (2002-04-01), None
U.S. Appl. No. 60/460,4220, filed Dec. 30, 2004, Murray et al.
U.S. Appl. No. 60/675,139, filed Apr. 26, 2005, Berkley.
U.S. Appl. No. 11/247,857, filed Oct. 10, 2005.
Barenco et al., “Elementary gates for quantum computation,”Physical Review A 52(5):3457-3467, Nov. 1995.
Barone et al.,Physics and Applications of the Josephson Effect, John Wiley & Sons, 1982, pp. 416-427.
Blatter et al., “Design aspects of superconducting—phase quantum bits,”Physical Review B 63:174511-1-174511-9, 2001.
Bryant et al., “Introduction to Electronic Analogue Computing,”Physics&Mathematics, AEC Research and Development Report, pp. 2-50, Aug. 1966.
Cormen et al.,Introduction to Algorithms, The MIT Press, Cambridge, Massachusetts, pp. 964-985, 2000.
DiVincenzo, “The Physical Implementation of Quantum Computation,”Fortschr. Phys. 48:771-783, 2000.
Friedman et al., “Detection of a Schrodinger's Cat State in an rf-SQUID,”arXiv:condmat/0004293 2:1-7, Apr. 19, 2000.
Friedman et al., “Quantum superposition of distinct macroscopic states,”Nature 406:43-46, Jul. 2000.
Garey et al.,Computers and Intractability: A Guide to the Theory of NP-Completeness, W. H. Freeman and Company, New York, 1979, pp. 1-15.
Han et al., “Time-Resolved Measurement of Dissipation-Induced Decoherence in a Josephson Junction,”Science 293:1457-1459, Aug. 24, 2001.
Il'ichev et al., “Continuous Monitoring of Rabi Oscillations in a Josephson Flux Qubit,”Physical Review Letters 91(9):097906-1-097906-4, Aug. 29, 2003.
Inokuchi et al., “Analog computation using quantum-flux parametron devices,”Physica C 357-360:1618-1621, 2001.
Lang, “Analog wasnota Computer Trademark!,”Sound&Vibration: Aug. 16-24, 2000.
Lidar, “On the quantum computational complexity of the Ising spin glass partition function and of knot invariants,”New Journal of Physics 6(167): 1-15, 2004.
Madou,Fundamentals of Microfabrication: The Science of Miniaturization, CRC Press, 2002, pp. 1-14.
Makhlin et al., “Quantum-state engineering with Josephson-junction devices,”Reviews of Modern Physics 73(2):357-400, Apr. 2001.
Martinis et al., “Rabi Oscillations in a Large Josephson-Junction Qubit,”Physical Review Letters 89(11):117901-1-117901-4, Sep. 9, 2002.
Mooij et al., “Josephson Persistent-Current Qubit,”Science285:1036-1039, Aug. 13, 1999.
Nakamura et al., “Coherent control of macroscopic quantum states in a single-Cooper-pairbox,”Nature 398:786-788, Apr. 29, 1999.
Nielson et al.,Quantum Computation and Quantum Information, Cambridge University Press, Cambridge, 2000, 174-177.
Orlando et al., “Superconducting persistent-current qubit,”Physical Review B 60(22):15398-15413, Dec. 1, 1999.
Ramos et al., “Design for Effective Thermalization of Junctions for Quantum Coherence,”IEEE Transactions on Applied Superconductivity 11(1):998-1001, Mar. 2001.
Wocjan et al., “Treating the Independent Set Problem by 2D Ising Interactions with Adiabatic Quantum Computing,”arXiv:quant-ph/0302027 1:1-13, Feb. 4, 2003.
European Search Report, mailed Oct. 13, 2010, for EP 05849198.6, 10 pages.
Aaronson, “Thanksgiving Special: D-Wave at MIT,” Shtetl-Optimized—The Blog of Scott Aaronson, URL=http://www.scottaaronson.com/blog/?p=291, retrieved Apr. 14, 2011 (originally retrieved Nov. 28, 2007), 54 pages.
Blais et al., “Tunable Coupling of Superconducting Qubits,” Physical Review Letters 90(12):127901-1-127901-4, Mar. 28, 2003.
Cosmelli et al., “Controllable Flux Coupling for the Integration of Flux Qubits,” arXiv:cond-mat/0403690 v1, pp. 1-10, Mar. 29, 2004.
Grajcar et al., “Adiabatic Quantum Evolution of Superconducting Flux Qubits,” arXiv:cond-mat/0407405 v1, pp. 1-7, Jul. 15, 2004.
Kim et al., “Coupling of Josephson Current Qubits Using a Connecting Loop,” Physical Review B 70:184525-1-184525-6, 2004.
Lantz et al., “Josephson Junction Qubit Network with Current-Controlled Interaction,” Proceedings of the Fourth International Workshop on Macroscopic Quantum Coherence and Computing (MQC2'04), Jun. 7-10, 2004, 13 pages.
Niskanen et al., “Quantum Coherent Tunable Coupling of Superconducting Qubits,” Science 316:723-726, May 4, 2007.
Plourde et al., “Entangling Flux Qubits with a Bipolar Dynamic Inductance,” Physical Review B 70:140501-1-140501-4, 2004.
Strauch, Theory of Superconducting Phase Qubits, UMI Microform, Ann Arbor, Michigan, 2005, Chapter 8, “Conclusion,” pp. 298-306.
van Dam, “Quantum Computing: In the ‘Death Zone’?,” Nature Physics 3:220-221, Apr. 2007.
Wang et al., “Fast Entanglement of Two Charge-Phase Qubits Through Nonadiabatic Couling to a Large Josephson Junction,” Physical Review B 70:224515-1-224515-4, 2004.
Wei et al., “Quantum Computation with Josephson-Qubits by Using a Current-Biased Information Bus,” arXiv:cond-mat/0407667 v1, pp. 1-13, Jul. 26, 2004.
You et al., “Controllable Manipulation and Entanglement of Macroscopic Quantum States in Coupled Charge Qubits,” Physical Review B 68:024510-1-024510-8, 2003.
You et al., “Fast Two-Bit Operations in Inductively Coupled Flux Qubits,” arXiv:cond-mat/0309491 v1, pp. 1-5, Sep. 22, 2003.

Affiliated with

Also associated with

Rating

Analog processor comprising quantum devices does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Analog processor comprising quantum devices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analog processor comprising quantum devices will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2789455