Preparing Pseudo-Pure States in a Quadrupolar Spin System Using Optimal Control

被引：7

作者：

Tan Yi-Peng ^{[1
]}

Nie Xin-Fang ^{[2
]}

Li Jun ^{[1
]}

Chen Hong-Wei ^{[3
]}

Zhou Xian-Yi ^{[1
]}

Peng Xin-Hua ^{[1
]}

Du Jiang-Feng ^{[1
,2
]}

机构：

[1] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China

[2] Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China

[3] Chinese Acad Sci, Hefei Inst Phys Sci, High Magnet Field Lab, Hefei 230031, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2012年 / 29卷 / 12期

基金：

中国国家自然科学基金;

关键词：

NUCLEAR-MAGNETIC-RESONANCE; QUANTUM COMPUTATION; NMR-SPECTROSCOPY; DESIGN; PULSES; EXCITATION; IMPLEMENTATION; ALGORITHMS; AMPLITUDE; GATES;

D O I：

10.1088/0256-307X/29/12/127601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Pseudo-pure state (PPS) preparation is crucial in nuclear magnetic resonance quantum computation. There have been some methods in spin-1/2 systems and a few attempts in quadrupolar spin systems. As optimal control via gradient ascent pulses engineering (GRAPE) has been widely used in quantum information science, we apply this technique to PPS preparation in quadrupolar spin systems. This approach shows an effective and fast quantum control method for both the state preparation and the realization of quantum gates in quadrupolar systems.

引用

页数：4

共 29 条

[1] Quantum-state tomography for quadrupole nuclei and its application on a two-qubit system [J].

Bonk, FA ;

Sarthour, RS ;

deAzevedo, ER ;

Bulnes, JD ;

Mantovani, GL ;

Freitas, JCC ;

Bonagamba, TJ ;

Guimaraes, AP ;

Oliveira, IS .

PHYSICAL REVIEW A, 2004, 69 (04) :042322-1

[2] Quantum Simulators [J].

Buluta, Iulia ;

Nori, Franco .

SCIENCE, 2009, 326 (5949) :108-111

[3] Ensemble quantum computing by NMR spectroscopy [J].

Cory, DG ;

Fahmy, AF ;

Havel, TF .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1997, 94 (05) :1634-1639

[4] Use of quadrupolar nuclei for quantum-information processing by nuclear magnetic resonance: Implementation of a quantum algorithm [J].

Das, R ;

Kumar, A .

PHYSICAL REVIEW A, 2003, 68 (03) :8

[5] Experimental implementation of a quantum algorithm in a multiqubit NMR system formed by an oriented 7/2 spin [J].

Das, Ranabir ;

Kumar, Anil .

APPLIED PHYSICS LETTERS, 2006, 89 (02)

[6] Second order gradient ascent pulse engineering [J].

de Fouquieres, P. ;

Schirmer, S. G. ;

Glaser, S. J. ;

Kuprov, Ilya .

JOURNAL OF MAGNETIC RESONANCE, 2011, 212 (02) :412-417

[7] Experimental realization of a continuous version of the Grover algorithm [J].

Ermakov, VL ;

Fung, BM .

PHYSICAL REVIEW A, 2002, 66 (04) :6

[8] Design of strongly modulating pulses to implement precise effective Hamiltonians for quantum information processing [J].

Fortunato, EM ;

Pravia, MA ;

Boulant, N ;

Teklemariam, G ;

Havel, TF ;

Cory, DG .

JOURNAL OF CHEMICAL PHYSICS, 2002, 116 (17) :7599-7606

[9] Shaped radiofrequency pulses in high resolution NMR [J].

Freeman, R .

PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY, 1998, 32 :59-106

[10] Bulk spin-resonance quantum computation [J].

Gershenfeld, NA ;

Chuang, IL .

SCIENCE, 1997, 275 (5298) :350-356

← 1 2 3 →