High-finesse optical quantum gates for electron spins in artificial molecules

被引:86
作者
Troiani, F
Molinari, E
Hohenester, U
机构
[1] Univ Modena & Reggio Emilia, INFMS3, I-41100 Modena, Italy
[2] Univ Modena & Reggio Emilia, Dipartimento Fis, I-41100 Modena, Italy
[3] Karl Franzens Univ Graz, Inst Theoret Phys, A-8010 Graz, Austria
关键词
D O I
10.1103/PhysRevLett.90.206802
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A doped semiconductor double-quantum-dot molecule is proposed as a qubit realization. The quantum information is encoded in the electron spin, thus benefiting from the long relevant decoherence times; the enhanced flexibility of the molecular structure allows one to map the spin degrees of freedom onto the orbital ones and vice versa and opens the possibility for high-finesse (conditional and unconditional) quantum gates by means of stimulated Raman adiabatic passages.
引用
收藏
页码:4 / 206802
页数:4
相关论文
共 20 条
[1]   Coherent population transfer among quantum states of atoms and molecules [J].
Bergmann, K ;
Theuer, H ;
Shore, BW .
REVIEWS OF MODERN PHYSICS, 1998, 70 (03) :1003-1025
[2]   Quantum information processing with semiconductor macroatoms [J].
Biolatti, E ;
Iotti, RC ;
Zanardi, P ;
Rossi, F .
PHYSICAL REVIEW LETTERS, 2000, 85 (26) :5647-5650
[3]   Optimal quantum control in nanostructures:: Theory and application to a generic three-level system -: art. no. 053811 [J].
Borzì, A ;
Stadler, G ;
Hohenester, U .
PHYSICAL REVIEW A, 2002, 66 (05)
[4]  
BOUWMEESTER D, 2000, PHYSICS QUANTUM INFO
[5]   QUANTUM COMPUTATIONS WITH COLD TRAPPED IONS [J].
CIRAC, JI ;
ZOLLER, P .
PHYSICAL REVIEW LETTERS, 1995, 74 (20) :4091-4094
[6]   Optically driven spin memory in n-doped InAs-GaAs quantum dots -: art. no. 207401 [J].
Cortez, S ;
Krebs, O ;
Laurent, S ;
Senes, M ;
Marie, X ;
Voisin, P ;
Ferreira, R ;
Bastard, G ;
Gérard, JM ;
Amand, T .
PHYSICAL REVIEW LETTERS, 2002, 89 (20)
[7]   Optical excitations of a self-assembled artificial ion [J].
Findeis, F ;
Baier, M ;
Zrenner, A ;
Bichler, M ;
Abstreiter, G ;
Hohenester, U ;
Molinari, E .
PHYSICAL REVIEW B, 2001, 63 (12)
[8]   Few-particle effects in semiconductor quantum dots: Observation of multicharged excitons [J].
Hartmann, A ;
Ducommun, Y ;
Kapon, E ;
Hohenester, U ;
Molinari, E .
PHYSICAL REVIEW LETTERS, 2000, 84 (24) :5648-5651
[9]   Coherent population transfer in coupled semiconductor quantum dots [J].
Hohenester, U ;
Troiani, F ;
Molinari, E ;
Panzarini, G ;
Macchiavello, C .
APPLIED PHYSICS LETTERS, 2000, 77 (12) :1864-1866
[10]   Quantum information processing using quantum dot spins and cavity QED [J].
Imamoglu, A ;
Awschalom, DD ;
Burkard, G ;
DiVincenzo, DP ;
Loss, D ;
Sherwin, M ;
Small, A .
PHYSICAL REVIEW LETTERS, 1999, 83 (20) :4204-4207