|
| related topics |
| {error, code, errors} |
| {time, decoherence, evolution} |
| {spin, pulse, spins} |
| {level, atom, field} |
| {operator, operators, space} |
| {qubit, qubits, gate} |
| {cavity, atom, atoms} |
| {information, entropy, channel} |
| {trap, ion, state} |
| {states, state, optimal} |
| {bell, inequality, local} |
| {state, states, coherent} |
| {energy, gaussian, time} |
| {entanglement, phys, rev} |
| {energy, state, states} |
| {state, states, entangled} |
|
Automatic Quantum Error Correction
Jeff P Barnes, Warren S Warren
abstract: Criteria are given by which dissipative evolution can transfer populations
and coherences between quantum subspaces, without a loss of coherence. This
results in a form of quantum error correction that is implemented by the joint
evolution of a system and a cold bath. It requires no external intervention
and, in principal, no ancilla. An example of a system that protects a qubit
against spin-flip errors is proposed. It consists of three spin 1/2 magnetic
particles and three modes of a resonator. The qubit is the triple quantum
coherence of the spins, and the photons act as ancilla.
- oai_identifier:
- oai:arXiv.org:quant-ph/9912104
- categories:
- quant-ph
- comments:
- 16 pages 12 fig LaTex uses multicol, graphicx expanded version of
letter submitted to Phys Rev Lett
- doi:
- 10.1103/PhysRevLett.85.856
- arxiv_id:
- quant-ph/9912104
- created:
- 1999-12-22
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