Zobrazeno 1 - 10
of 150
pro vyhledávání: '"Bringewatt, A."'
Autor:
Wang, Yu-Xin, Bringewatt, Jacob, Seif, Alireza, Brady, Anthony J., Oh, Changhun, Gorshkov, Alexey V.
In this work, we propose a new form of exponential quantum advantage in the context of sensing correlated noise. Specifically, we focus on the problem of estimating parameters associated with Lindblad dephasing dynamics, and show that entanglement ca
Externí odkaz:
http://arxiv.org/abs/2410.05878
Autor:
Bringewatt, Jacob, Steffen, Zach, Ritter, Martin A., Ehrenberg, Adam, Wang, Haozhi, Palmer, B. S., Kollár, Alicia J., Gorshkov, Alexey V., García-Pintos, Luis Pedro
Leveraging quantum information geometry, we derive generalized quantum speed limits on the rate of change of the expectation values of observables. These bounds subsume and, for Hilbert space dimension $\geq 3$, tighten existing bounds -- in some cas
Externí odkaz:
http://arxiv.org/abs/2409.04544
Autor:
García-Pintos, Luis Pedro, O'Leary, Tom, Biswas, Tanmoy, Bringewatt, Jacob, Cincio, Lukasz, Brady, Lucas T., Liu, Yi-Kai
A leading approach to algorithm design aims to minimize the number of operations in an algorithm's compilation. One intuitively expects that reducing the number of operations may decrease the chance of errors. This paradigm is particularly prevalent
Externí odkaz:
http://arxiv.org/abs/2408.02764
Publikováno v:
Phys. Rev. Research 6, 013246 (2024)
The problem of optimally measuring an analytic function of unknown local parameters each linearly coupled to a qubit sensor is well understood, with applications ranging from field interpolation to noise characterization. Here, we resolve a number of
Externí odkaz:
http://arxiv.org/abs/2401.16472
Autor:
García-Pintos, Luis Pedro, Bharti, Kishor, Bringewatt, Jacob, Dehghani, Hossein, Ehrenberg, Adam, Halpern, Nicole Yunger, Gorshkov, Alexey V.
Publikováno v:
Phys. Rev. Lett. 133, 040802 (2024)
We upper- and lower-bound the optimal precision with which one can estimate an unknown Hamiltonian parameter via measurements of Gibbs thermal states with a known temperature. The bounds depend on the uncertainty in the Hamiltonian term that contains
Externí odkaz:
http://arxiv.org/abs/2401.10343
Autor:
Watson, James D., Bringewatt, Jacob, Shaw, Alexander F., Childs, Andrew M., Gorshkov, Alexey V., Davoudi, Zohreh
Quantum computers offer the potential to simulate nuclear processes that are classically intractable. With the goal of understanding the necessary quantum resources, we employ state-of-the-art Hamiltonian-simulation methods, and conduct a thorough al
Externí odkaz:
http://arxiv.org/abs/2312.05344
Autor:
Niroula, Pradeep, Dolde, Jack, Zheng, Xin, Bringewatt, Jacob, Ehrenberg, Adam, Cox, Kevin C., Thompson, Jeff, Gullans, Michael J., Kolkowitz, Shimon, Gorshkov, Alexey V.
The dominant noise in an "erasure qubit" is an erasure -- a type of error whose occurrence and location can be detected. Erasure qubits have potential to reduce the overhead associated with fault tolerance. To date, research on erasure qubits has pri
Externí odkaz:
http://arxiv.org/abs/2310.01512
Publikováno v:
Quantum 8, 1300 (2024)
Randomized measurement protocols, including classical shadows, entanglement tomography, and randomized benchmarking are powerful techniques to estimate observables, perform state tomography, or extract the entanglement properties of quantum states. W
Externí odkaz:
http://arxiv.org/abs/2303.15519
We prove an adiabatic theorem that applies at timescales short of the typical adiabatic limit. Our proof analyzes the stability of solutions to Schrodinger's equation under perturbation. We directly characterize cross-subspace effects of perturbation
Externí odkaz:
http://arxiv.org/abs/2303.13478
The adiabatic theorem provides sufficient conditions for the time needed to prepare a target ground state. While it is possible to prepare a target state much faster with more general quantum annealing protocols, rigorous results beyond the adiabatic
Externí odkaz:
http://arxiv.org/abs/2210.15687