Universal and deterministic manipulation of the quantum state of harmonic oscillators: A route to unitary gates for fock state qubits

被引:29
作者
Santos, MF [1 ]
机构
[1] Univ Fed Minas Gerais, Dept Fis, BR-30161970 Belo Horizonte, MG, Brazil
关键词
D O I
10.1103/PhysRevLett.95.010504
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present a simple quantum circuit that allows for the universal and deterministic manipulation of the quantum state of confined harmonic oscillators. The scheme is based on the selective interactions of the referred oscillator with an auxiliary three-level system and a classical external driving source, and enables any unitary operations on Fock states, two by two. One circuit is equivalent to a single qubit unitary logical gate on Fock states qubits. Sequences of similar protocols allow for complete, deterministic, and state-independent manipulation of the harmonic oscillator quantum state.
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页数:4
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共 27 条
[1]   Direct measurement of the Wigner function of a one-photon Fock state in a cavity [J].
Bertet, P ;
Auffeves, A ;
Maioli, P ;
Osnaghi, S ;
Meunier, T ;
Brune, M ;
Raimond, JM ;
Haroche, S .
PHYSICAL REVIEW LETTERS, 2002, 89 (20) :200402-200402
[2]   Berry's phase in cavity QED: Proposal for observing an effect of field quantization [J].
Carollo, A ;
Santos, MF ;
Vedral, V .
PHYSICAL REVIEW A, 2003, 67 (06)
[3]   Quantum state transfer and entanglement distribution among distant nodes in a quantum network [J].
Cirac, JI ;
Zoller, P ;
Kimble, HJ ;
Mabuchi, H .
PHYSICAL REVIEW LETTERS, 1997, 78 (16) :3221-3224
[4]   Quantum state engineering using conditional measurement on a beam splitter [J].
Dakna, M ;
Knoll, L ;
Welsch, DG .
EUROPEAN PHYSICAL JOURNAL D, 1998, 3 (03) :295-307
[5]   Mesoscopic quantum coherences in cavity QED: Preparation and decoherence monitoring schemes [J].
Davidovich, L ;
Brune, M ;
Raimond, JM ;
Haroche, S .
PHYSICAL REVIEW A, 1996, 53 (03) :1295-1309
[6]   2-BIT GATES ARE UNIVERSAL FOR QUANTUM COMPUTATION [J].
DIVINCENZO, DP .
PHYSICAL REVIEW A, 1995, 51 (02) :1015-1022
[7]   Realization of a photonic controlled-NOT gate sufficient for quantum computation [J].
Gasparoni, S ;
Pan, JW ;
Walther, P ;
Rudolph, T ;
Zeilinger, A .
PHYSICAL REVIEW LETTERS, 2004, 93 (02) :020504-1
[8]   Vibrational pair cat states [J].
Gou, SC ;
Steinbach, J ;
Knight, PL .
PHYSICAL REVIEW A, 1996, 54 (05) :4315-4319
[9]   SPIN ECHOES [J].
HAHN, EL .
PHYSICAL REVIEW, 1950, 80 (04) :580-594
[10]   COMPARISON OF QUANTUM AND SEMICLASSICAL RADIATION THEORIES WITH APPLICATION TO BEAM MASER [J].
JAYNES, ET ;
CUMMINGS, FW .
PROCEEDINGS OF THE IEEE, 1963, 51 (01) :89-+