Quantum gate characterization in an extended Hilbert space

We describe an approach for characterizing optical quantum gates, by constructing models which incorporate mode-matching effects. Quantum process tomography is then performed on the model. The techniques can be generalized to other quantum computing architectures.

[1]  D. Oi,et al.  Interference of quantum channels. , 2003, Physical review letters.

[2]  Aephraim M. Steinberg,et al.  Diagnosis, prescription, and prognosis of a bell-state filter by quantum process tomography. , 2003, Physical review letters.

[3]  Timothy C. Ralph,et al.  Frequency and temporal effects in linear optical quantum computing , 2004, Physical Review A.

[4]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[5]  Gerard J. Milburn,et al.  Simple scheme for efficient linear optics quantum gates , 2001 .

[6]  Isaac L. Chuang,et al.  Prescription for experimental determination of the dynamics of a quantum black box , 1997 .

[7]  T. Ralph,et al.  Demonstration of an all-optical quantum controlled-NOT gate , 2003, Nature.

[8]  Maxim Raginsky,et al.  A fidelity measure for quantum channels , 2001, quant-ph/0107108.

[9]  N. Langford,et al.  Distance measures to compare real and ideal quantum processes (14 pages) , 2004, quant-ph/0408063.

[10]  Thierry Paul,et al.  Quantum computation and quantum information , 2007, Mathematical Structures in Computer Science.

[11]  E. Knill,et al.  A scheme for efficient quantum computation with linear optics , 2001, Nature.

[12]  T. Ralph,et al.  Quantum process tomography of a controlled-NOT gate. , 2004, Physical review letters.

[13]  Jian-Wei Pan,et al.  Realization of a photonic controlled-NOT gate sufficient for quantum computation. , 2004, Physical Review Letters.

[14]  P. Zoller,et al.  Complete Characterization of a Quantum Process: The Two-Bit Quantum Gate , 1996, quant-ph/9611013.

[15]  M. J. Fitch,et al.  Experimental controlled-NOT logic gate for single photons in the coincidence basis , 2003, quant-ph/0303095.

[16]  N. K. Langford,et al.  Linear optical controlled- NOT gate in the coincidence basis , 2002 .

[17]  An-Ning Zhang,et al.  Experimental demonstration of a nondestructive controlled-NOT quantum gate for two independent photon qubits. , 2004, Physical review letters.