Zobrazeno 1 - 10
of 126
pro vyhledávání: '"Oganesyan, Vadim"'
Non-Hermitian quantum dynamics lie in an intermediate regime between unitary Hamiltonian dynamics and trace-preserving non-unitary open quantum system dynamics. Given differences in the noise tolerance of unitary and non-unitary dynamics, it is inter
Externí odkaz:
http://arxiv.org/abs/2409.06113
Autor:
Barton, Brandon, Sagal, Jacob, Feeney, Sean, Grattan, George, Patnaik, Pratik, Oganesyan, Vadim, Carr, Lincoln D, Kapit, Eliot
In this work, we introduce a new iterative quantum algorithm, called Iterative Symphonic Tunneling for Satisfiability problems (IST-SAT), which solves quantum spin glass optimization problems using high-frequency oscillating transverse fields. IST-SA
Externí odkaz:
http://arxiv.org/abs/2408.06571
Autor:
Allafi, Negin Moharrami, Kolodrubetz, Michael H., Bukov, Marin, Oganesyan, Vadim, Yarmohammadi, Mohsen
Publikováno v:
Phys. Rev. B 110, 064420 (2024)
In the realm of open quantum systems, steady states and high-harmonic generation (HHG) existing far from equilibrium have become core pillars of ultrafast science. Most solid-state research explores charge HHG with limited investigations into spin de
Externí odkaz:
http://arxiv.org/abs/2404.05830
Autor:
Javed, Umar, Valencia-Tortora, Riccardo J., Marino, Jamir, Oganesyan, Vadim, Kolodrubetz, Michael
In few-qubit systems, the quantum Zeno effect arises when measurement occurs sufficiently frequently that the spins are unable to relax between measurements. This can compete with Hamiltonian terms, resulting in interesting relaxation processes which
Externí odkaz:
http://arxiv.org/abs/2404.04255
Autor:
Kapit, Eliot, Barton, Brandon A., Feeney, Sean, Grattan, George, Patnaik, Pratik, Sagal, Jacob, Carr, Lincoln D., Oganesyan, Vadim
A canonical feature of the constraint satisfaction problems in NP is approximation hardness, where in the worst case, finding sufficient-quality approximate solutions is exponentially hard for all known methods. Fundamentally, the lack of any guided
Externí odkaz:
http://arxiv.org/abs/2312.06104
Autor:
Grattan, George, Barton, Brandon A., Feeney, Sean, Mossi, Gianni, Patnaik, Pratik, Sagal, Jacob C., Carr, Lincoln D., Oganesyan, Vadim, Kapit, Eliot
The exponential suppression of macroscopic quantum tunneling (MQT) in the number of elements to be reconfigured is an essential element of broken symmetry phases. This suppression is also a core bottleneck in quantum algorithms, such as traversing an
Externí odkaz:
http://arxiv.org/abs/2311.17814
Publikováno v:
Physical Review A 109, 022417 (2024)
We examine two conditions that can be used to detect bipartite entanglement, and show that they can be used to provide lower bounds on the negativity of states. We begin with two-qubit states, and then show how what was done there can be extended to
Externí odkaz:
http://arxiv.org/abs/2311.00142
Publikováno v:
Phys. Rev. B 109, 224417 (2024)
To coherently enhance inherent weak magnetic interactions in rare-earth orthoferrite SmFeO$_3$ as a functional material for spintronic applications, we simulate the dissipative spin dynamics that are linearly and quadratically coupled to laser-driven
Externí odkaz:
http://arxiv.org/abs/2308.14939
Analog quantum optimization methods, such as quantum annealing, are promising and at least partially noise tolerant ways to solve hard optimization and sampling problems with quantum hardware. However, they have thus far failed to demonstrate broadly
Externí odkaz:
http://arxiv.org/abs/2306.10632
Autor:
Kapit, Eliot, Oganesyan, Vadim
We propose a novel superconducting logical qubit architecture, called the Cold Echo Qubit (CEQ), which is capable of preserving quantum information for much longer timescales than any of its component parts. The CEQ operates fully autonomously, requi
Externí odkaz:
http://arxiv.org/abs/2212.04588