Realization of quantum process tomography in NMR

By Andrew M. Childs, Isaac L. Chuang, Debbie W. Leung. 2000

187 citations recorded by the source corpus.

Quantum process tomography is a procedure by which the unknown dynamical evolution of an open quantum system can be fully experimentally characterized. We demonstrate explicitly how this procedure can be implemented with a nuclear magnetic resonance quantum computer. This allows us to measure the fidelity of a controlled-NOT logic gate and to experimentally investigate the error model for our computer. Based on the latter analysis, we test an important assumption underlying many models of quantum error correction, the independence of errors on different qubits.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/92953f5fff3044ba700dffb511578c5ea03fde8f

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In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

Citations in the corpus

Unknown Quantum States and Operations, a Bayesian View (2004, unknown): “Quantum process tomography has been demonstrated experimentally in liquid state nuclear magnetic resonance [80,81], and recently a number of optical experiments [82,84,83] have implemented entanglement-assisted quantum process tomography.”
NMR techniques for quantum control and computation (2004, methodology): “This procedure has been used experimentally only for one-and two-qubit NMR s Childs et al. , 2001; Boulant et al. , 2003 d and optical-photon systems s Altepeter et al. , 2003; Mitchell et al. , 2003 d .”
Continuous-variable optical quantum-state tomography (2009, background): “…al. 1997 as well as Chuang and Nielsen 1997 and experimentally realized on one-qubit teleportation Nielsen et al., 1998 , a system formed by the vibrational levels of atoms in an optical lattice Myrskog et al., 2005 and on a two-qubit controlled-NOT gate Childs et al., 2001; O’Brien et al., 2004 .”
Quantum computing with trapped ions (2008, methodology): “Such a process tomography has been carried out for characterizing quantum gates in NMR (Childs et al., 2001) and in linear-optics quantum computing (O’Brien et al.”