# Continuous dynamical decoupling and decoherence-free subspaces for qubits with tunable interaction

@article{Yalinkaya2019ContinuousDD, title={Continuous dynamical decoupling and decoherence-free subspaces for qubits with tunable interaction}, author={I. Yalçinkaya and B. Çakmak and G. Karpat and F. F. Fanchini}, journal={Quantum Information Processing}, year={2019}, volume={18}, pages={1-17} }

Protecting quantum states from the decohering effects of the environment is of great importance for the development of quantum computation devices and quantum simulators. Here, we introduce a continuous dynamical decoupling protocol that enables us to protect the entangling gate operation between two qubits from the environmental noise. We present a simple model that involves two qubits which interact with each other with a strength that depends on their mutual distance and generates the… Expand

#### References

SHOWING 1-10 OF 116 REFERENCES

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

- Physics, Medicine
- Nature
- 2012

The integration of dynamical decoupling into quantum gates for a standard hybrid system, the electron–nuclear spin register, is presented, which directly allow decoherence-protected interface gates between different types of solid-state qubit. Expand

Protecting the √SWAP operation from general and residual errors by continuous dynamical decoupling

- Physics, Mathematics
- 2015

We study the occurrence of errors in a continuously decoupled two-qubit state during a $\sqrt{SWAP}$ quantum operation under decoherence. We consider a realization of this quantum gate based on the… Expand

Decoherence control: Universal protection of two-qubit states and two-qubit gates using continuous driving fields

- Physics
- 2012

A field configuration utilizing local static and oscillating fields is constructed to achieve universal (but low-order) protection of two-qubit states. That is, two-qubit states can be protected… Expand

Continuously decoupling single-qubit operations from a perturbing thermal bath of scalar bosons

- Physics
- 2007

We investigate the use of continuously applied external fields to maximize the fidelity of quantum logic operations performed on a decohering qubit. Assuming a known error operator and an environment… Expand

Rigorous bounds on the performance of a hybrid dynamical-decoupling quantum-computing scheme

- Physics
- 2008

We study dynamical decoupling in a multiqubit setting, where it is combined with quantum logic gates. This is illustrated in terms of computation using Heisenberg interactions only, where global… Expand

Universal quantum computation with the exchange interaction

- Physics, Medicine
- Nature
- 2000

An explicit scheme is introduced in which the Heisenberg interaction alone suffices to implement exactly any quantum computer circuit, at a price of a Factor of three in additional qubits, and about a factor of ten in additional two-qubit operations. Expand

Realization of universal ion-trap quantum computation with decoherence-free qubits.

- Physics, Medicine
- Physical review letters
- 2009

This work demonstrates the realization of a universal set of quantum gates acting on decoherence-free ion qubits, and combines these gates to realize the first controlled-NOT gate towards a decoherent-free, scalable quantum computer. Expand

Coherence-protected quantum gate by continuous dynamical decoupling in diamond.

- Computer Science, Physics
- Physical review letters
- 2012

This paper demonstrates experimentally on a nitrogen-vacancy system that by using a continuous-wave dynamical decoupling method, it might not only prolong the coherence time by about 20 times but also protect the quantum gates for the duration of the controlling time. Expand

Continuous dynamical protection of two-qubit entanglement from uncorrelated dephasing, bit flipping, and dissipation

- Physics
- 2007

We show that a simple arrangement of external fields, consisting of a static component and an orthogonal rotating component, can continuously decouple a two-qubit entangled state from uncorrelated… Expand

Theory of decoherence-free fault-tolerant universal quantum computation

- Physics
- 2001

Universal quantum computation on decoherence-free subspaces and subsystems (DFSs) is examined with particular emphasis on using only physically relevant interactions. A necessary and sufficient… Expand