A new quantum circuit method computes spectral functions A(k,ω) by simulating ARPES-like system-environment coupling, cutting sampling overhead by O(N) and demonstrated on a 54-qubit ion-trap processor for a 27-site chain.
Superconducting pairing correlations on a trapped-ion quantum computer
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Helios achieves 98 qubits with single-qubit gate infidelity 2.5(1)×10^{-5}, two-qubit 7.9(2)×10^{-4}, and SPAM 4.8(6)×10^{-4}, enabling circuits beyond classical simulation.
The biplanar architecture maps Fermi-Hubbard spin sectors to two planes, eliminating swaps and cutting each Trotter step depth to 4t_synth + 90 logical timesteps versus 6t_synth + 354 in single-plane methods, yielding an estimated 2-hour runtime for L=8 with 1.35 million physical qubits under a 1% 1
A model-agnostic randomized dissipative cooling protocol drives generic strongly correlated fermionic systems to their low-energy manifold using local ancilla couplings with random energy splittings.
Experimental demonstration of quantum collision models for Markovian dynamics on quantum hardware with up to 7 system qubits and 40 time steps, using hardware-specific ancilla strategies for local and nonlocal dissipation.
Hybrid variational quantum simulation on fermionic ultracold atoms achieves polynomial scaling for ground states of gapless target Hamiltonians, claiming exponential speedup over classical exact diagonalization for local observables.
A comprehensive review of scaling paths for superconducting quantum computers, with resource and sensitivity analyses for utility-scale applications under realistic error distributions.
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