Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Stenger, John P. T."'
A Jastrow--Gutzwiller operator adds many-body correlations to a quantum state. However, the operator is non-unitary, making it difficult to implement directly on a quantum computer. We present a novel implementation of the Jastrow--Gutzwiller operato
Externí odkaz:
http://arxiv.org/abs/2305.19014
Publikováno v:
Phys. Rev. Research 6, 013238 (2024)
We present a cascaded variational quantum eigensolver algorithm that only requires the execution of a set of quantum circuits once rather than at every iteration during the parameter optimization process, thereby increasing the computational throughp
Externí odkaz:
http://arxiv.org/abs/2303.15237
We present a novel method for solving eigenvalue problems on a quantum computer based on spectroscopy. The method works by coupling a "probe" qubit to a set of system simulation qubits and then time evolving both the probe and the system under Hamilt
Externí odkaz:
http://arxiv.org/abs/2202.12910
Publikováno v:
Phys. Rev. A, 105, 022438, (2022)
We present a hybrid classical/quantum algorithm for efficiently solving the eigenvalue problem of many-particle Hamiltonians on quantum computers with limited resources by splitting the workload between classical and quantum processors. This algorith
Externí odkaz:
http://arxiv.org/abs/2112.05063
Autor:
Wu, Hao, Zhang, Po, Stenger, John P. T., Su, Zhaoen, Chen, Jun, Badawy, Ghada, Gazibegovic, Sasa, Bakkers, Erik P. A. M., Frolov, Sergey M.
Kitaev chain is a theoretical model of a one-dimensional topological superconductor with Majorana zero modes at the two ends of the chain. With the goal of emulating this model, we build a chain of three quantum dots in a semiconductor nanowire. We o
Externí odkaz:
http://arxiv.org/abs/2105.08636
Autor:
Jardine, Malcolm J. A., Stenger, John P. T., Jiang, Yifan, de Jong, Eline J., Wang, Wenbo, Jayich, Ania C. Bleszynski, Frolov, Sergey M.
Publikováno v:
SciPost Phys. 11, 090 (2021)
Majorana zero modes are expected to arise in semiconductor-superconductor hybrid systems, with potential topological quantum computing applications. One limitation of this approach is the need for a relatively high external magnetic field that should
Externí odkaz:
http://arxiv.org/abs/2104.05130
Publikováno v:
Phys. Rev. Research 3, 033171 (2021)
We simulate the dynamics of braiding Majorana zero modes on an IBM Quantum computer. We find the native quantum gates introduce too much noise to observe braiding. Instead, we use Qiskit Pulse to develop scaled two-qubit quantum gates that better mat
Externí odkaz:
http://arxiv.org/abs/2012.11660
Autor:
Stenger, John P. T., Mong, Roger S. K.
Publikováno v:
Phys. Rev. A 101, 042338 (2020)
Although Majorana platforms are promising avenues to realizing topological quantum computing, they are still susceptible to errors from thermal noise and other sources. We show that the error rate of Majorana qubits can be drastically reduced using a
Externí odkaz:
http://arxiv.org/abs/1906.01658
Autor:
Stenger, John P. T., Pekker, David
Publikováno v:
Phys. Rev. B 100, 035420 (2019)
As an analogy to the Weyl point in k-space, we search for energy levels which close at a single point as a function of a three dimensional parameter space. Such points are topologically protected in the sense that any perturbation which acts on the t
Externí odkaz:
http://arxiv.org/abs/1904.09158
Publikováno v:
Phys. Rev. B 99, 035307 (2019)
We propose a topological qubit in which braiding and readout are mediated by the $4\pi$ Majorana-Josephson effect. The braidonium device consists of three Majorana nanowires that come together to make a tri-junction; in order to control the supercond
Externí odkaz:
http://arxiv.org/abs/1808.03309