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Postselection-free entanglement dynamics via spacetime duality
Matteo Ippoliti, Vedika Khemani
The dynamics of entanglement in `hybrid' non-unitary circuits (for example, involving both unitary gates and quantum measurements) has recently become an object of intense study. A…
Perturbative instability towards delocalization at phase transitions between MBL phases
Sanjay Moudgalya, David A. Huse, Vedika Khemani
We examine the stability of marginally Anderson localized phase transitions between localized phases to the addition of many-body interactions, focusing in particular on the spin-g…
From tunnels to towers: quantum scars from Lie Algebras and q-deformed Lie Algebras
Nicholas O'Dea, Fiona Burnell, Anushya Chandran +1
We present a general symmetry-based framework for obtaining many-body Hamiltonians with scarred eigenstates that do not obey the eigenstate thermalization hypothesis. Our models ar…
Many-body physics in the NISQ era: quantum programming a discrete time crystal
Matteo Ippoliti, Kostyantyn Kechedzhi, Roderich Moessner +2
Recent progress in the realm of noisy, intermediate scale quantum (NISQ) devices represents an exciting opportunity for many-body physics, by introducing new laboratory platforms w…
Entanglement phase transitions in measurement-only dynamics
Matteo Ippoliti, Michael J. Gullans, Sarang Gopalakrishnan +2
Unitary circuits subject to repeated projective measurements can undergo an entanglement phase transition (EPT) as a function of the measurement rate. This transition is generally…
Kinetically constrained freezing transition in a dipole-conserving system
Alan Morningstar, Vedika Khemani, David A. Huse
We study a stochastic lattice gas of particles in one dimension with strictly finite-range interactions that respect the fracton-like conservation laws of total charge and dipole m…
Comment on "Quantum Time Crystals from Hamiltonians with Long-Range Interactions"
Vedika Khemani, Roderich Moessner, S. L. Sondhi
In a recent paper (Phys. Rev. Lett. 123, 210602), Kozin and Kyriienko claim to realize "genuine" ground state time crystals by studying models with long-ranged and infinite-body in…
Floquet prethermalization in a Bose-Hubbard system
Antonio Rubio-Abadal, Matteo Ippoliti, Simon Hollerith +6
Periodic driving has emerged as a powerful tool in the quest to engineer new and exotic quantum phases. While driven many-body systems are generically expected to absorb energy ind…