Abstract
The transfer and storage of quantum information in a hybrid quantum system, consisting of an ensemble of atoms or spins interacting with a cavity, is adversely affected by the inhomogeneity of the spins, which negates the coherent exchange of excitations between the physical components. Using a full quantum treatment based on variational renormalization group, we show how quantum information encoded in the states of a parametrically driven hybrid system is strongly protected against any decoherence that may arise due to the inhomogeneity in the spin-ensemble.
Funding Information
  • Prime Minister’s Research Fellowship, India (1302055)
  • Core-Research Grant, SERB/ANRF, Department of Science & Technology, India (CRG/2021/008918)
  • IRCC, IIT Bombay, India (RD/0521-IRCCSH0-001)

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