Rapid generation of a three-dimensional entangled state for two atoms trapped in a cavity via shortcuts to adiabatic passage

Abstract

An experimentally feasible scheme is proposed for rapidly generating twoatom three-dimensional (3D) entanglement with one step. As one technique of shortcuts to adiabaticity, transitionless quantum driving is applied to speed up the adiabatic generation of two-atom 3D entanglement. Apart from the rapid rate, the scheme has much higher experimental feasibility than the recent research (Quant.Inf. Process. ). Besides, numerical simulations indicate the scheme has strong robustness against parameter deviations and decoherence.

Generation of three-dimensional entanglement between two antiblockade Rydberg atoms with detuning-compensation-induced effective resonance

“…In addition, high-dimensional entanglement enables higher channel capacity of quantum communication and higher efficiency of quantum information processing [16]. In the recent past years, a lot of theoretical schemes of generating high-dimensional entanglement was proposed in various physical platforms, including atom-cavity systems [17][18][19][20][21][22][23][24][25][26][27], Rydberg atom systems [28][29][30][31], photon-emitter systems [32,33], nitrogen-vacancy center [34] and ion-trap systems [35]. In addition, the high-dimensional entanglement-related experiments have been reported [16,[36][37][38][39][40][41].…”

“…Each atom is driven by two laser fields, and the two atoms are rendered into the Rydberg anti-blockade regime. Different from the existing schemes of the atomic high-dimensional entanglement [17][18][19][20][21][22][23][24][25][26][27], on one hand the proposed scheme does not need a cavity that mediates the interaction between two atoms because the two atoms interact with each other by the direct RRI. On the other hand, the existing Rydberg-atom-based schemes of the highdimensional entanglement are almost based on dissipative dynamics that requires very long evolution time [28][29][30][31], while the present scheme uses the unitary dynamics which can ensure the fast generation of the 3D entanglement.…”