Preparation of an Exciton Condensate of Photons on a 53-Qubit Quantum Computer

Abstract

Quantum computation promises an exponential speedup of certain classes of classical calculations through the preparation and manipulation of entangled quantum states. So far most molecular simulations on quantum computers, however, have been limited to small numbers of particles. Here we prepare a highly entangled state on a 53-qubit IBM quantum computer, representing 53 particles, which reveals the formation of an exciton condensate of photon particles and holes. While elusive for more than 50 years, such condensates were recently achieved for electron-hole pairs in graphene bilayers and metal chalcogenides. Our result with a photon condensate has the potential to further the exploration of this new form of condensate that may play a significant role in realizing efficient room-temperature energy transport.

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• Lowering Tomography Costs in Quantum Simulation with a Symmetry Projected Operator Basis
• Large Cumulant Eigenvalue as a Signature of Exciton Condensation
• Beginnings of Exciton Condensation in Coronene Analog of Graphene Double Layer
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• Quantum Phase Transitions in a Model Hamiltonian Exhibiting Entangled Simultaneous Fermion-Pair and Exciton Condensations
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