Efficient tomography of quantum processes

2010/10/04 by Xiang‐Bin Wang, Xiang-Bin Wang, Wang, Xiang-Bin +8 · 1 citation
Biochemistry, Genetics and Molecular Biology · Computer Science · Physics and Astronomy · #Quantum Information and Cryptography #Quantum Mechanics and Applications #Spectroscopy Techniques in Biomedical and Chemical Research #quant-ph

paper · pdf · doi:10.48550/arxiv.1010.0472

4 pages, 1 figure

arxiv created 2010/10/04 · arxiv updated 2010/10/05

Abstract

We show with explicit formulas that one can completely identify an unknown quantum process with only one weakly entangled state; and identify a quantum optical Gaussian process with either one two-mode squeezed state or a few different coherent states. In tomography of a multi-mode process, our method reduces the number of different test states exponentially compared with existing methods.

Cited by

• Efficient tomography of quantum-optical Gaussian processes probed with a few coherent states

Related

• Ancilla-less selective and efficient quantum process tomography
• Direct and Parallel Tomography of a Quantum Process
• Highly accurate Gaussian process tomography with geometrical sets of\n coherent states
• Selective and efficient quantum process tomography with single photons
• Learning quantum states of continuous variable systems