Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Vedika Khemani"'
Publikováno v:
Physical Review X, Vol 14, Iss 3, p 031014 (2024)
A characteristic feature of “quantum chaotic” systems is that their eigenspectra and eigenstates display universal statistical properties described by random matrix theory (RMT). However, eigenstates of local systems also encode structure beyond
Externí odkaz:
https://doaj.org/article/6afd869b9c6b4c65b4597c5d20917ffd
Autor:
Alan Morningstar, Markus Hauru, Jackson Beall, Martin Ganahl, Adam G.M. Lewis, Vedika Khemani, Guifre Vidal
Publikováno v:
PRX Quantum, Vol 3, Iss 2, p 020331 (2022)
Tensor processing units (TPUs) are specialized hardware accelerators developed by Google to support large-scale machine-learning tasks but they can also be leveraged to accelerate and scale other linear-algebra-intensive computations. In this paper,
Externí odkaz:
https://doaj.org/article/841bc66db73c40ae978a37e1d4e0f8dd
Publikováno v:
Physical Review X, Vol 12, Iss 1, p 011045 (2022)
The extension of many-body quantum dynamics to the nonunitary domain has led to a series of exciting developments, including new out-of-equilibrium entanglement phases and phase transitions. We show how a duality transformation between space and time
Externí odkaz:
https://doaj.org/article/4ac5573843cb49d7b62368dc37f5fac6
Publikováno v:
Physical Review Research, Vol 3, Iss 4, p 043046 (2021)
We introduce a class of quantum circuits that are unitary along three distinct “arrows of time.” These dynamics share some of the analytical tractability of “dual-unitary” circuits, while exhibiting distinctive and richer phenomenology. We fi
Externí odkaz:
https://doaj.org/article/d28363bead5542a69486aa1e10ca8648
Publikováno v:
PRX Quantum, Vol 2, Iss 3, p 030346 (2021)
Recent progress in the realm of noisy intermediate-scale quantum (NISQ) devices [J. Preskill, Quantum 2, 79 (2018)] represents an exciting opportunity for many-body physics by introducing new laboratory platforms with unprecedented control and measur
Externí odkaz:
https://doaj.org/article/1bff34371eb14a669ea78198f9f585ad
Publikováno v:
Physical Review X, Vol 11, Iss 1, p 011030 (2021)
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 understood in terms of a competition between the scrambling effects of
Externí odkaz:
https://doaj.org/article/a788681ae5d44405bb9def41fc8ab855
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043305 (2020)
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 are derived from parent Hamiltonians with a non-Abelian (or q-deformed)
Externí odkaz:
https://doaj.org/article/99adcdea16ec49bb877f3705f4612ecd
Autor:
Antonio Rubio-Abadal, Matteo Ippoliti, Simon Hollerith, David Wei, Jun Rui, S. L. Sondhi, Vedika Khemani, Christian Gross, Immanuel Bloch
Publikováno v:
Physical Review X, Vol 10, Iss 2, p 021044 (2020)
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 indefinitely and reach an infinite-temperature state, the rate of heating
Externí odkaz:
https://doaj.org/article/e82be54605844d9abc156241bbcd2c09
Publikováno v:
Physical Review X, Vol 10, Iss 2, p 021046 (2020)
While a clean, driven system generically absorbs energy until it reaches “infinite temperature,” it may do so very slowly exhibiting what is known as a prethermal regime. Here, we show that the emergence of an additional approximately conserved q
Externí odkaz:
https://doaj.org/article/4735b2d049b549a09dc4bf1076b71b85
Publikováno v:
Physical Review X, Vol 8, Iss 3, p 031057 (2018)
We study the scrambling of local quantum information in chaotic many-body systems in the presence of a locally conserved quantity like charge or energy that moves diffusively. The interplay between conservation laws and scrambling sheds light on the
Externí odkaz:
https://doaj.org/article/95ddde03077d4a858b56176a53e80e4b