Dynamical Generation of Noiseless Quantum Subsystems

Journal Article · Mon Oct 16 00:00:00 EDT 2000 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.85.3520· OSTI ID:40205872

Viola, Lorenza; Knill, Emanuel; Lloyd, Seth

We combine dynamical decoupling and universal control methods for open quantum systems with coding procedures. By exploiting a general algebraic approach, we show how appropriate encodings of quantum states result in obtaining universal control over dynamically generated noise-protected subsystems with limited control resources. In particular, we provide a constructive scheme based on two-body Hamiltonians for performing universal quantum computation over large noiseless spaces which can be engineered in the presence of arbitrary linear quantum noise.

• Sponsoring Organization: (US)
• OSTI ID: 40205872
• Journal Information: Physical Review Letters, Vol. 85, Issue 16; Other Information: DOI: 10.1103/PhysRevLett.85.3520; Othernumber: PRLTAO000085000016003520000001; 011042PRL; PBD: 16 Oct 2000; ISSN 0031-9007
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DECOUPLING
HAMILTONIANS
CONTROL SYSTEMS
INFORMATION THEORY