Universal Control of Decoupled Quantum Systems

Journal Article · Mon Dec 06 00:00:00 EST 1999 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.83.4888· OSTI ID:20217998

Viola, Lorenza ^[1]; Lloyd, Seth ^[1]; Knill, Emanuel ^[2]

---

1. d'Arbeloff Laboratory for Information Systems and Technology, Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

We show that if one can perform a restricted set of fast manipulations on a quantum system, one can implement a large class of dynamical evolutions by effectively removing or introducing selected Hamiltonians. The procedure can be used to achieve universal noise-tolerant control based on purely unitary open-loop transformations of the dynamics. As a result, it is in principle possible to perform noise-protected universal quantum computation using no extra space resources. (c) 1999 The American Physical Society.

• OSTI ID: 20217998
• Journal Information: Physical Review Letters, Vol. 83, Issue 23; Other Information: PBD: 6 Dec 1999; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
QUANTUM MECHANICS
HAMILTONIANS
CONTROL THEORY
NOISE
OPEN-LOOP CONTROL
THEORETICAL DATA