Using error correction to determine the noise model
- 25 January 2007
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 75 (1), 012331
- https://doi.org/10.1103/physreva.75.012331
Abstract
Quantum error correcting codes have been shown to have the ability of making quantum information resilient against noise. Here we show that we can use quantum error correcting codes as diagnostics to characterize noise. The experiment is based on a three-bit quantum error correcting code carried out on a three-qubit nuclear magnetic resonance (NMR) quantum information processor. Utilizing both engineered and natural noise, the degree of correlations present in the noise affecting a two-qubit subsystem was determined. We measured a correlation factor of using the error correction protocol, and using a standard NMR technique based on coherence pathway selection. Although the error correction method demands precise control, the results demonstrate that the required precision is achievable in the liquid-state NMR setting.
Keywords
Other Versions
This publication has 21 references indexed in Scilit:
- Experimental Quantum Error CorrectionPhysical Review Letters, 1998
- Resilient Quantum ComputationScience, 1998
- Theory of quantum error-correcting codesPhysical Review A, 1997
- Complete Characterization of a Quantum Process: The Two-Bit Quantum GatePhysical Review Letters, 1997
- Mixed-state entanglement and quantum error correctionPhysical Review A, 1996
- Error Correcting Codes in Quantum TheoryPhysical Review Letters, 1996
- Perfect Quantum Error Correcting CodePhysical Review Letters, 1996
- Scheme for reducing decoherence in quantum computer memoryPhysical Review A, 1995
- Decoherence and the Transition from Quantum to ClassicalPhysics Today, 1991
- Simulating physics with computersInternational Journal of Theoretical Physics, 1982