Optimal Control at the Quantum Speed Limit

被引：413

作者：

Caneva, T. ^{[1
]}

Murphy, M. ^{[2
]}

Calarco, T. ^{[2
,3
]}

Fazio, R. ^{[4
]}

Montangero, S. ^{[2
,4
]}

Giovannetti, V. ^{[4
]}

Santoro, G. E. ^{[1
,5
,6
]}

机构：

[1] Scuola Int Super Studi Avanzati, SISSA, I-34014 Trieste, Italy

[2] Univ Ulm, Inst Quanteninformat Verarbeitung, D-89069 Ulm, Germany

[3] European Ctr Theoret Studies, I-38050 Villazzano, TN, Italy

[4] NEST CNR INFM Scuola Normale Super, I-56126 Pisa, Italy

[5] CNR INFM Democritos Natl Simulat Ctr, I-34014 Trieste, Italy

[6] ICTP, I-34014 Trieste, Italy

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 24期

关键词：

EVOLUTION; DYNAMICS; TIME;

D O I：

10.1103/PhysRevLett.103.240501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Optimal control theory is a promising candidate for a drastic improvement of the performance of quantum information tasks. We explore its ultimate limit in paradigmatic cases, and demonstrate that it coincides with the maximum speed limit allowed by quantum evolution.

引用

页数：4

共 24 条

[1] Adiabatic quantum transport in a spin chain with a moving potential [J].

Balachandran, Vinitha ;

Gong, Jiangbin .

PHYSICAL REVIEW A, 2008, 77 (01)

[2] QUANTUM DECAY AND THE MANDELSTAM-TAMM TIME ENERGY INEQUALITY [J].

BHATTACHARYYA, K .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1983, 16 (13) :2993-2996

[3] Quantum communication through spin chain dynamics: an introductory overview [J].

Bose, Sougato .

CONTEMPORARY PHYSICS, 2007, 48 (01) :13-30

[4] Quantum computations with atoms in optical lattices: Marker qubits and molecular interactions [J].

Calarco, T ;

Dorner, U ;

Julienne, PS ;

Williams, CJ ;

Zoller, P .

PHYSICAL REVIEW A, 2004, 70 (01) :012306-1

[5] Time-optimal quantum evolution - art. no. 060503 [J].

Carlini, A ;

Hosoya, A ;

Koike, T ;

Okudaira, Y .

PHYSICAL REVIEW LETTERS, 2006, 96 (06)

[6] A quantum adiabatic evolution algorithm applied to random instances of an NP-complete problem [J].

Farhi, E ;

Goldstone, J ;

Gutmann, S ;

Lapan, J ;

Lundgren, A ;

Preda, D .

SCIENCE, 2001, 292 (5516) :472-476

[7] Quantum limits to dynamical evolution [J].

Giovannetti, V ;

Lloyd, S ;

Maccone, L .

PHYSICAL REVIEW A, 2003, 67 (05) :8

[8] Quantizing Ulam's control conjecture [J].

Gruebele, M. ;

Wolynes, P. G. .

PHYSICAL REVIEW LETTERS, 2007, 99 (06)

[9] Efficient transfer of coherence through Ising spin chains [J].

Khaneja, N ;

Glaser, SJ .

PHYSICAL REVIEW A, 2002, 66 (06) :4

[10] Optimal control of coupled spin dynamics:: design of NMR pulse sequences by gradient ascent algorithms [J].

Khaneja, N ;

Reiss, T ;

Kehlet, C ;

Schulte-Herbrüggen, T ;

Glaser, SJ .

JOURNAL OF MAGNETIC RESONANCE, 2005, 172 (02) :296-305

← 1 2 3 →