Generating Efficient Quantum Circuits for Preparing Maximally Multipartite Entangled States

Sadowski, Przemysław

doi:10.1142/s0219749913500676

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…In this case genome is modeled as sequence od real numbers. It is a very convenient method, because there are many already developed mutation and crossing-over methods for such genome model that have been successfully applied to the problems of searching for the optimal evolution [31,32]. Methods of selection do not depend on genome model and can be based on a variety of already existing ones as well.…”

Section: Customization Of the Gpmentioning

confidence: 99%

Various methods of optimizing control pulses for quantum systems with decoherence

Pawela

Sadowski

2016

Quantum Inf Process

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We design control setting that allows the implementation of an approximation of an unitary operation of a quantum system under decoherence using various quantum system layouts and numerical algorithms. We focus our attention on the possibility of adding ancillary qubits which help to achieve a desired quantum map on the initial system. Furthermore, we use three methods of optimizing the control pulses: genetic optimization, approximate evolution method and approximate gradient method. To model the noise in the system we use the Lindblad equation. We obtain results showing that applying the control pulses to the ancilla allows one to successfully implement unitary operation on a target system in the presence of noise, which is not possible which control field applied to the system qubits.

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Section: Customization Of the Gpmentioning

confidence: 99%

Various methods of optimizing control pulses for quantum systems with decoherence

Pawela

Sadowski

2016

Quantum Inf Process

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“…The question of creating an arbitrary quantum state of a cavity field or atoms (ion, NV centers) has been discussed in these papers [13][14][15][16][17][18]. The method proposed by Law and Eberly [13] was using a two-channel approach.…”

Section: Introductionmentioning

confidence: 99%

Arbitrary control of entanglement between two nitrogen-vacancy-center ensembles coupling to a superconducting-circuit qubit

Yang

Zhong

2018

Phys. Rev. A

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We propose an effective scheme for realizing a Jaynes-Cummings (J-C) model with the collective nitrogen-vacancy center ensembles (NVE) bosonic modes in a hybrid system. Specifically, the controllable transmon qubit can alternatively interact with one of the two NVEs, which results in the production of N particle entangled states. Arbitrary N particle entangled states, NOON states, N-dimensional entangled states and entangled coherent states are demonstrated. Realistic imperfections and decoherence effects are analyzed via numerical simulation. Since no cavity photons or excited levels of the NV center are populated during the whole process, our scheme is insensitive to cavity decay and the spin dephasing effect of NVE. The idea provides a scalable way to realize NVEs-circuit cavity quantum information processing with current technology.

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Quantum distance-based classifier with distributed knowledge and state recycling

Sadowski

2018

Int. J. Quantum Inform.

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In this work we examine recently proposed distance-based classification method designed for near-term quantum processing units with limited resources. We further study possibilities to reduce the quantum resources without any efficiency decrease. We show that only a part of the information undergoes coherent evolution and this fact allows us to introduce an algorithm with significantly reduced quantum memory size. Additionally, considering only partial information at a time, we propose a classification protocol with information distributed among a number of agents. Finally, we show that the information evolution during a measurement can lead to a better solution and that accuracy of the algorithm can be improved by harnessing the state after the final measurement.

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Generating Efficient Quantum Circuits for Preparing Maximally Multipartite Entangled States

Cited by 3 publications

References 11 publications

Various methods of optimizing control pulses for quantum systems with decoherence

Various methods of optimizing control pulses for quantum systems with decoherence

Arbitrary control of entanglement between two nitrogen-vacancy-center ensembles coupling to a superconducting-circuit qubit

Quantum distance-based classifier with distributed knowledge and state recycling

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