High fidelity state mapping performed in a V-type level structure via stimulated Raman transition

Abstract

It is proved that a qubit encoded in excited states of a V-type quantum system cannot be perfectly transferred to the state of the cavity field mode using a single rectangular laser pulse. This obstacle can be overcome by using a two-stage protocol, in which the fidelity of a state-mapping operation can be increased to nearly one.

Creating a switchable optical cavity with controllable quantum-state mapping between two modes

“…These jumps come from the fact that populations of atomic excited levels oscillate with high frequencies. [65][66][67] Thus, there are many local closely-spaced maxima of the population of the desired final state |0 A ⊗ |n ph B . Therefore, the global maximum (t π ) changes sometimes discontinuously with increasing of n ph -from one local minimum to the next one.…”

The Influence of Non‐Markovian Characters on Quantum Adiabatic Evolution

“…Adiabatic control techniques have been an irreplaceable position for their robustness against the noise of the classical driving field . One of the most paramount application of the adiabatic techniques is the stimulated Raman adiabatic passage (STIRAP) that allows the population of a physical system transfer from a quantum state to another quantum state . Applying sodium dimer structure interacting with the Stokes and pump lasers, STIRAP has been experimentally demonstrated .…”