Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1996-10-08
1999-06-29
Westin, Edward P.
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
324312, G01R 3344, G01R 3346
Patent
active
059173220
ABSTRACT:
An approach to processing quantum information uses a bulk ensemble of a very large number of identical entities as its source of quantum degrees of freedom. The information is represented as the deviation from uniform population probability for at least one of the quantum states of the ensemble. Coherences between quantum states, created when the ensemble is modified in a way that removes it from thermal equilibrium can serve as effective degrees of freedom. A bulk thermal ensemble of nuclear spins in a static magnetic field is treated using nuclear magnetic resonance pulses for preparation of an initial pure state, and effecting arbitrary single-spin and coupled multi-spin rotations. Readout of the result is accomplished by observation of the magnetization of the ensemble.
REFERENCES:
Lloyd, "A Potentially Realizable Quantum computer", Science, vol. 261, Sep. 1993, pp. 1569-1571.
Lloyd, "Almost Any Quantum Logic Gate is Universal," Physical Review Letters, vol. 75, No. 2, Jul. 1995, pp. 346-349.
Turchette et al., "Measurement of Conditional Phase Shifts for Quantuim Logic," Physical Review Letters, vol. 75, No. 25, Dec. 1995, pp. 4710-4713.
Monroe et al., "Demonstration of a Fundamental Quantum Logic Gate," Physical Review Letters, vol. 75, No. 25, Dec. 1995, pp. 4714-4717.
Gershenfeld et al., "Bulk Spin-resonance Quantum Computation," Science, vol. 275, Jan. 1997, pp. 350-356.
Cory et al., "Ensemble Quantum Computing by NMR Spectroscopy," Proc. Natl. Acad. Sci. USA, vol. 94, Mar. 1997, pp. 1634-1639.
Bowden et al., "Quantum Computing Using Electron-nuclear Double Resonances," SPIE, vol. 3076, Apr. 1997, pp. 173-182.
P. Shor, in Proc. 35th Ann. Symp. on Found. of Comp. Sci. at 124 (1994).
Cirac et al., Phys. Rev. Lett. 74:4091 (1995).
Bandyopadhyay et al., Jpn. J. Appl. Phys. 35:3350 (1996).
Chuang et al., Phys. Rev. A 52:3489 (1995).
DiVencenzo, Phys. Rev. A 51:1015 (1995).
Chuang Isaac
Gershenfeld Neil
Lee John R.
Massachusetts Institute of Technology
Westin Edward P.
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