COMPARISON OF QUANTUM-STATE DIFFUSION AND QUANTUM-JUMP SIMULATIONS OF 2-PHOTON PROCESSES IN A DISSIPATIVE ENVIRONMENT

被引:81
作者
GARRAWAY, BM
KNIGHT, PL
机构
[1] Optics Section, Blackett Laboratory, Imperial College, London SW7 2BZ, Prince Consort Road
来源
PHYSICAL REVIEW A | 1994年 / 49卷 / 02期
关键词
D O I
10.1103/PhysRevA.49.1266
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Recent work on the dynamics of open systems has shown how the density operator may be unraveled into component state-vector trajectories using quantum-state diffusion or the quantum-jump model. In traditional dissipative environments the coherent evolution is stochastically perturbed by the action of the reservoir or environment, so that superposition states are dephased. We examine a system in which both coherent-driving and dissipative damping involve the simultaneous creation and annihilation of pairs of photons; This has unusual consequences for the creation and decay of coherences. We analyze this problem using the two recently proposed simulation methods and compare the results of the simulation methods with each other and with density-matrix calculations. We also demonstrate the formation of Schrodinger ''cat'' states of the field through the action of dissipation and depict them using the Wigner and Husimi quasiprobability functions.
引用
收藏
页码:1266 / 1274
页数:9
相关论文
共 33 条
[1]  
CARMICHAEL HJ, 1993, LECTURE NOTES PHYSIC
[2]   WAVE-FUNCTION APPROACH TO DISSIPATIVE PROCESSES IN QUANTUM OPTICS [J].
DALIBARD, J ;
CASTIN, Y ;
MOLMER, K .
PHYSICAL REVIEW LETTERS, 1992, 68 (05) :580-583
[3]   QUANTUM STOCHASTIC-PROCESSES AS MODELS FOR STATE-VECTOR REDUCTION [J].
DIOSI, L .
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1988, 21 (13) :2885-2898
[4]   CONTINUOUS QUANTUM MEASUREMENT AND ITO FORMALISM [J].
DIOSI, L .
PHYSICS LETTERS A, 1988, 129 (8-9) :419-423
[5]   MONTE-CARLO SIMULATION OF THE ATOMIC MASTER EQUATION FOR SPONTANEOUS EMISSION [J].
DUM, R ;
ZOLLER, P ;
RITSCH, H .
PHYSICAL REVIEW A, 1992, 45 (07) :4879-4887
[6]   MONTE-CARLO SIMULATION OF MASTER-EQUATIONS IN QUANTUM OPTICS FOR VACUUM, THERMAL, AND SQUEEZED RESERVOIRS [J].
DUM, R ;
PARKINS, AS ;
ZOLLER, P ;
GARDINER, CW .
PHYSICAL REVIEW A, 1992, 46 (07) :4382-4396
[7]   WAVE-FUNCTION QUANTUM STOCHASTIC DIFFERENTIAL-EQUATIONS AND QUANTUM-JUMP SIMULATION METHODS [J].
GARDINER, CW ;
PARKINS, AS ;
ZOLLER, P .
PHYSICAL REVIEW A, 1992, 46 (07) :4363-4381
[8]   GENERATION AND DETECTION OF NONCLASSICAL FIELD STATES BY CONDITIONAL MEASUREMENTS FOLLOWING 2-PHOTON RESONANT INTERACTIONS [J].
GARRAWAY, BM ;
SHERMAN, B ;
MOYACESSA, H ;
KNIGHT, PL ;
KURIZKI, G .
PHYSICAL REVIEW A, 1994, 49 (01) :535-547
[9]   QUANTUM PHASE DISTRIBUTIONS AND QUASIDISTRIBUTIONS [J].
GARRAWAY, BM ;
KNIGHT, PL .
PHYSICAL REVIEW A, 1992, 46 (09) :R5346-R5349
[10]   GENERATION OF EVEN AND ODD COHERENT STATES IN A COMPETITIVE 2-PHOTON PROCESS [J].
GERRY, CC ;
HACH, EE .
PHYSICS LETTERS A, 1993, 174 (03) :185-189