Faculty Mentor

Darayas Patel, Ph.D.


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The hardware of current quantum computing (QC) platforms is based on superconductors and ion traps. It is cumbersome and complex, requires ultra-low cryogenic temperatures and high vacuum. Possible alternative is based on the compounds doped with the ions of Rare Earth (RE) elements. Such hardware does not need high-vacuum, can work at non-cryogenic temperatures and be less sophisticated. The qubits in these systems correspond to the quantum levels of 4 f electrons of RE ions, and they have optical frequencies. Qubit formation is supported by the properties of RE ions: (a) weak interaction with the environment, (b) strong inhomogeneous crystal field, and (c) the ability of neighboring ions, being in some 4 f states, to interact with each other through the mechanism of Stark blockade. Stark blockade can be used for quantum CNOT gate operations. Anti-parity-time-symmetry (APTS) can potentially increase the decoherence time of the qubits via coupling to an APTS laser cavity.

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Applied Mathematics | Computer Sciences | Physical Sciences and Mathematics

Quantum computers based on rare-earth compounds and PT- and  anti-PT symmetric qubits- Faculty Research Symposium 2022