UMN High Energy Theory Seminars
Speedup of Wave-Like Dark Matter Searches Using Entangled Qubits
by
→
America/Chicago
Description
Quantum sensing provides novel techniques that can accelerate searches for dark matter (DM). Recent proposals use entangled GHZ states for wave-like DM sensing, where quadratic scaling of the signal can be achieved through coherent addition of amplitudes from each qubit. In this talk, I will show that unlike analogous schemes in conventional cavity setups, this scaling advantage persists even at the level of scan-rate in the entangled-qubit scheme, demonstrating genuine speedup over cavity experiments. I will also show that this favorable scaling can allow GHZ states of ~ 100 qubits to compete with dark photon cavity searches for DM masses ≳ 50 𝜇eV.