6 papers · 1 filter
Scalable tests of quantum contextuality from stabilizer-testing nonlocal games
Wanbing Zhao, H. W. Shawn Liew, Wen Wei Ho +2
Soon after the dawn of quantum error correction, DiVincenzo and Peres observed that stabilizer codewords could give rise to simple proofs of quantumness via contextuality. This dis…
Asymmetric decay of quantum many-body scars in XYZ quantum spin chains
Dhiman Bhowmick, Vir B. Bulchandani, Wen Wei Ho
Quantum many-body scars are atypical energy eigenstates of chaotic quantum many-body systems that prevent certain special non-equilibrium initial conditions from thermalizing. We p…
The classical limit of Quantum Max-Cut
Vir B. Bulchandani, Stephen Piddock
It is well-known in physics that the limit of large quantum spin should be understood as a semiclassical limit. This raises the question of whether such emergent classicality f…
Duality between string and computational order in symmetry-enriched topological phases
Paul Herringer, Vir B. Bulchandani, Younes Javanmard +2
We present the first examples of topological phases of matter with uniform power for measurement-based quantum computation. This is possible thanks to a new framework for analyzing…
Nash states versus eigenstates for many-body quantum systems
Chuqiao Lin, Vir B. Bulchandani, Shivaji L. Sondhi
Eigenstates of observables such as the Hamiltonian play a central role in quantum mechanics. Inspired by the pure Nash equilibria that arise in classical game theory, we propose ''…
Random-matrix models of monitored quantum circuits
Vir B. Bulchandani, S. L. Sondhi, J. T. Chalker
We study the competition between Haar-random unitary dynamics and measurements for unstructured systems of qubits. For projective measurements, we derive various properties of the…