# Global entangling gates on arbitrary ion qubits

@article{Lu2019GlobalEG, title={Global entangling gates on arbitrary ion qubits}, author={Yao Lu and Shuaining Zhang and Kuan Zhang and Wentao Chen and Yangchao Shen and Jialiang Zhang and Jingning Zhang and Kihwan Kim}, journal={Nature}, year={2019}, volume={572}, pages={363-367} }

Quantum computers can efficiently solve classically intractable problems, such as the factorization of a large number1 and the simulation of quantum many-body systems2,3. [... ] Key Method Because such global gates require decoupling multiple modes and balancing all pairwise coupling strengths during the gate, we develop a system with fully independent control capability on each ion14. Expand

## 51 Citations

Parallel entangling operations on a universal ion-trap quantum computer

- Physics, Computer ScienceNature
- 2019

Parallel two-qubit entangling gates are realized in an array of fully connected trapped-ion qubits, achieving a full-adder operation on a quantum processor with an average fidelity of 83.3 per cent.

Theory of robust multiqubit nonadiabatic gates for trapped ions

- PhysicsPhysical Review A
- 2020

The prevalent approach to executing quantum algorithms on quantum computers is to break-down the algorithms to a concatenation of universal gates, typically single and two-qubit gates. However such a…

Efficient arbitrary simultaneously entangling gates on a trapped-ion quantum computer

- Computer Science, PhysicsNature Communications
- 2020

An exact protocol that simultaneously entangles arbitrary pairs of qubits on a trapped-ion quantum computer that demonstrates an exponential improvement in both classical and quantum resources over the current state of the art.

Scalable and parallel tweezer gates for quantum computing with long ion strings

- Physics, Computer ScienceQuantum Computing, Communication, and Simulation
- 2020

The inherent scalability of this approach is demonstrated by presenting analytical and numerical results for long 1D ion chains and even for infinite chains of uniformly spaced ions, and it is shown that combining the methods with optimal coherent control techniques allows to realize maximally dense universal parallelized quantum circuits.

Robust two-qubit trapped ions gates using spin-dependent squeezing

- Physics
- 2022

Entangling gates are an essential component of quantum computers. However, generating high-ﬁdelity gates, in a scalable manner, remains a major challenge in all quantum information processing…

Efficient, stabilized two-qubit gates on a trapped-ion quantum computer

- PhysicsPhysical review letters
- 2021

A new gate-optimizing principle is presented according to which negligible amounts of gate fidelity are traded for substantial savings in power, which, in turn, can be trade for substantial increases in gate speed and/or qubit connectivity.

Two-qubit entangling gates within arbitrarily long chains of trapped ions

- PhysicsPhysical Review A
- 2019

Ion trap quantum computers are based on modulating the Coulomb interaction between atomic ion qubits using external forces. However, the spectral crowding of collective motional modes could pose a…

Comparing two-qubit and multiqubit gates within the toric code

- PhysicsPhysical Review A
- 2022

In some quantum computing (QC) architectures, entanglement of an arbitrary number of qubits can be generated in a single operation. This property has many potential applications, and may specifically…

Fast multi-qubit global-entangling gates without individual addressing of trapped ions

- PhysicsQuantum Science and Technology
- 2022

We propose and study ways speeding up of the entangling operations in the trapped ions system with high fidelity. First, we find a scheme to increase the speed of a two-qubit gate without the…

Trapped-Ion Quantum Computer with Robust Entangling Gates and Quantum Coherent Feedback

- PhysicsPRX Quantum
- 2022

Quantum computers are expected to achieve a significant speed-up over classical computers in solving a range of computational problems. Chains of ions held in a linear Paul trap are a promising…

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