Quantum Control in Qutrit Systems Using Hybrid Rabi-STIRAP Pulses

Photonics

Giuseppe Falci¹  Elisabetta Paladino¹  Gheorghe Sorin Paraoanu²  Antti Vepsäläinen²  Sergey Danilin² 

[1] Dipartimento di Fisica e Astronomia, Università di Catania, Via Santa Sofia 64, 95123 Catania, Italy;Low Temperature Laboratory, Department of Applied Physics, Aalto University School of Science, P.O. Box 15100, FI-00076 Aalto, Finland;

关键词: quantum computing;    superconducting qubits;    stimulated Raman adiabatic passage;    nonadiabaticity;    quantum control;    quantum gates;    Josephson junctions;   

DOI  :  10.3390/photonics3040062

来源: DOAJ

【 摘 要 】

We introduce and analyze theoretically a procedure that combines slow adiabatic stimulated Raman adiabatic passage (STIRAP) manipulation with short nonadiabatic Rabi pulses to produce any desired three-level state in a qutrit system. In this protocol, the fast pulses create superpositions between the ground state and the first excited state, while the slow pulses transfer an arbitrary population to the second excited state via STIRAP. We demonstrate high-fidelity quantum control of the level populations and phases and we characterize the errors incurred under the breakdown of adiabaticity. In a configuration where an ancillary state is available, we show how to realize a nondemolition monitoring of the relative phases. These methods are general and can be implemented on any experimental platform where a quantum system with at least three accessible energy levels is available. We discuss here in detail experimental implementations in circuit quantum electrodynamics (QED) based on the results obtained with a transmon, where the control of population using the hybrid Rabi-STIRAP sequence has been achieved.

【 授权许可】

Unknown