scholarly journals Optimal tuning of solid-state quantum gates: A universal two-qubit gate

2010 ◽  
Vol 81 (5) ◽  
Author(s):  
E. Paladino ◽  
A. Mastellone ◽  
A. D’Arrigo ◽  
G. Falci
Keyword(s):  
Solid State ◽  
Quantum Gates ◽  
Optimal Tuning ◽  
Qubit Gate

scholarly journals Decoherence-protected quantum gates for a hybrid solid-state spin register

Nature ◽  
2012 ◽  
Vol 484 (7392) ◽  
pp. 82-86 ◽  
Author(s):  
T. van der Sar ◽  
Z. H. Wang ◽  
M. S. Blok ◽  
H. Bernien ◽  
T. H. Taminiau ◽  
...  
Keyword(s):  
Solid State ◽  
Quantum Gates ◽  
State Spin

scholarly journals Experimental Realization of Robust Geometric Quantum Gates with Solid-State Spins

2019 ◽  
Vol 122 (1) ◽  
Author(s):  
Y.-Y. Huang ◽  
Y.-K. Wu ◽  
F. Wang ◽  
P.-Y. Hou ◽  
W.-B. Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Quantum Gates ◽  
Experimental Realization

scholarly journals InP quantum dots for applications in laser devices and future solid-state quantum gates

2010 ◽  
Vol 245 ◽  
pp. 012077 ◽  
Author(s):  
E Koroknay ◽  
W-M Schulz ◽  
M Eichfelder ◽  
R Roßbach ◽  
M Jetter ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solid State ◽  
Quantum Gates ◽  
Laser Devices ◽  
Inp Quantum Dots

scholarly journals Entanglement across separate silicon dies in a modular superconducting qubit device

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Alysson Gold ◽  
J. P. Paquette ◽  
Anna Stockklauser ◽  
Matthew J. Reagor ◽  
M. Sohaib Alam ◽  
...  
Keyword(s):  
Solid State ◽  
Integrated Circuits ◽  
Large Scale ◽  
Fault Tolerant ◽  
Bell Inequality ◽  
Building Blocks ◽  
Superconducting Qubit ◽  
Modular Architecture ◽  
Near Term ◽  
Qubit Gate

AbstractAssembling future large-scale quantum computers out of smaller, specialized modules promises to simplify a number of formidable science and engineering challenges. One of the primary challenges in developing a modular architecture is in engineering high fidelity, low-latency quantum interconnects between modules. Here we demonstrate a modular solid state architecture with deterministic inter-module coupling between four physically separate, interchangeable superconducting qubit integrated circuits, achieving two-qubit gate fidelities as high as 99.1 ± 0.5% and 98.3 ± 0.3% for iSWAP and CZ entangling gates, respectively. The quality of the inter-module entanglement is further confirmed by a demonstration of Bell-inequality violation for disjoint pairs of entangled qubits across the four separate silicon dies. Having proven out the fundamental building blocks, this work provides the technological foundations for a modular quantum processor: technology which will accelerate near-term experimental efforts and open up new paths to the fault-tolerant era for solid state qubit architectures.

scholarly journals Experimental realization of universal geometric quantum gates with solid-state spins

Nature ◽  
2014 ◽  
Vol 514 (7520) ◽  
pp. 72-75 ◽  
Author(s):  
C. Zu ◽  
W.-B. Wang ◽  
L. He ◽  
W.-G. Zhang ◽  
C.-Y. Dai ◽  
...  
Keyword(s):  
Solid State ◽  
Quantum Gates ◽  
Experimental Realization

Dynamical decoupling of random telegraph noise in a two-qubit gate

2014 ◽  
Vol 12 (02) ◽  
pp. 1461008 ◽  
Author(s):  
A. D'Arrigo ◽  
G. Falci ◽  
E. Paladino
Keyword(s):  
Information Processing ◽  
Quantum Information ◽  
Solid State ◽  
Quantum Information Processing ◽  
Analytic Form ◽  
Dynamical Decoupling ◽  
Random Telegraph Noise ◽  
Telegraph Noise ◽  
Gate Time ◽  
Qubit Gate

Controlling the dynamics of entanglement and preventing its disappearance are central requisites for any implementation of quantum information processing. Solid state qubits are frequently affected by random telegraph noise due to bistable impurities of different nature coupled to the device. In this paper, we investigate the possibility to achieve an efficient universal two-qubit gate in the presence of random telegraph noise by periodic dynamical decoupling. We find an analytic form of the gate error as a function of the number of applied pulses valid when the gate time is much shorter then the telegraphic process correlation time. The analysis is further supplemented by exact numerical results demonstrating the feasibility of a highly-efficient universal two-qubit gate.

Sign in / Sign up

Export Citation Format

Share Document