Optimization of short coherent control pulses

被引：47

作者：

Pasini, S. ^{[1
]}

Fischer, T. ^{[1
]}

Karbach, P. ^{[1
]}

Uhrig, G. S. ^{[1
]}

机构：

[1] Tech Univ Dortmund, Lehrstuhl Theoret Phys 1, D-44221 Dortmund, Germany

来源：

PHYSICAL REVIEW A | 2008年 / 77卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.77.032315

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The coherent control of a small quantum system is considered. For a two-level system coupled to an arbitrary bath we consider a pulse of finite duration. We derive the leading and the next-leading order corrections to the evolution operator due to the noncommutation of the pulse and the bath Hamiltonian. The conditions are computed that make the leading corrections vanish. The pulse shapes optimized in this way are given for pi and pi/2 pulses.

引用

页数：9

共 27 条

[11] Fault-tolerant quantum dynamical decoupling [J].

Khodjasteh, K ;

Lidar, DA .

PHYSICAL REVIEW LETTERS, 2005, 95 (18)

[12] Performance of deterministic dynamical decoupling schemes: Concatenated and periodic pulse sequences [J].

Khodjasteh, Kaveh ;

Lidar, Daniel A. .

PHYSICAL REVIEW A, 2007, 75 (06)

[13] Reduced decoherence in large quantum registers [J].

Krojanski, Hans Georg ;

Suter, Dieter .

PHYSICAL REVIEW LETTERS, 2006, 97 (15)

[14]

LEE B, ARXIV07101416, P32512

[15] Generating unexpected spin echoes in dipolar solids with π pulses [J].

Li, Dale ;

Dementyev, A. E. ;

Dong, Yanqun ;

Ramos, R. G. ;

Barrett, S. E. .

PHYSICAL REVIEW LETTERS, 2007, 98 (19)

[16] ON THE EXPONENTIAL SOLUTION OF DIFFERENTIAL EQUATIONS FOR A LINEAR OPERATOR [J].

MAGNUS, W .

COMMUNICATIONS ON PURE AND APPLIED MATHEMATICS, 1954, 7 (04) :649-673

[17] Bang-bang control of fullerene qubits using ultrafast phase gates [J].

Morton, JJL ;

Tyryshkin, AM ;

Ardavan, A ;

Benjamin, SC ;

Porfyrakis, K ;

Lyon, SA ;

Briggs, GAD .

NATURE PHYSICS, 2006, 2 (01) :40-43

[18] High-fidelity one-qubit operations under random telegraph noise [J].

Möttönen, M ;

de Sousa, R ;

Zhang, J ;

Whaley, KB .

PHYSICAL REVIEW A, 2006, 73 (02)

[19] Coherent manipulation of coupled electron spins in semiconductor quantum dots [J].

Petta, JR ;

Johnson, AC ;

Taylor, JM ;

Laird, EA ;

Yacoby, A ;

Lukin, MD ;

Marcus, CM ;

Hanson, MP ;

Gossard, AC .

SCIENCE, 2005, 309 (5744) :2180-2184

[20] BROAD-BAND POPULATION-INVERSION [J].

TYCKO, R .

PHYSICAL REVIEW LETTERS, 1983, 51 (09) :775-777

← 1 2 3 →