Articles with "state preparation" as a keyword



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Controlled Remote State Preparation of an Arbitrary Two-Qubit State by Using GHZ States

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Published in 2017 at "International Journal of Theoretical Physics"

DOI: 10.1007/s10773-016-3209-2

Abstract: In this paper, we demonstrate that two Greenberger-Horne-Zeilinger (GHZ) states can be used to realize the perfect and deterministic controlled remote state preparation of an arbitrary two-qubit state by performing only the two-qubit projective measurements… read more here.

Keywords: state; remote state; two qubit; state preparation ... See more keywords
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Deterministic Bidirectional Remote State Preparation of a- and Symmetric Quantum States with a Proper Quantum Channel

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Published in 2017 at "International Journal of Theoretical Physics"

DOI: 10.1007/s10773-017-3485-5

Abstract: We present a new scheme for deterministically realizing the mutual interchange of quantum information between two distant parties via selected quantum states as the shared entangled resource. We first show the symmetric bidirectional remote state… read more here.

Keywords: state; quantum; remote state; state preparation ... See more keywords
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Perfect joint remote state preparation of arbitrary six-qubit cluster-type states

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Published in 2018 at "Quantum Information Processing"

DOI: 10.1007/s11128-018-1943-5

Abstract: In this paper, a joint remote state preparation protocol, which is applicable to six-qubit cluster states, is presented. The scheme is performed with the help of three quantum channels constituted by eight qubits. A new… read more here.

Keywords: six qubit; remote state; qubit cluster; joint remote ... See more keywords
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Quasi-Adiabatic External State Preparation of Ultracold Atoms in Microgravity

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Published in 2020 at "Microgravity Science and Technology"

DOI: 10.1007/s12217-020-09840-w

Abstract: The Cold Atom Laboratory on the International Space Station produces ultracold gases of rubidium and potassium in a tight magnetic trap near the surface of a magnetic chip. In order to use these samples in… read more here.

Keywords: adiabatic external; state preparation; external state; atoms microgravity ... See more keywords

Efficient Cauchy distribution based quantum state preparation by using the comparison algorithm

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Published in 2021 at "AIP Advances"

DOI: 10.1063/5.0066059

Abstract: The quantum Monte Carlo algorithm can provide significant speedup compared to its classical counterpart. So far, most reported works have utilized Grover’s state preparation algorithm. However, this algorithm relies on costly controlled Y rotations to… read more here.

Keywords: state; quantum; comparison; state preparation ... See more keywords
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Ultrafast critical ground state preparation via bang–bang protocols

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Published in 2020 at "New Journal of Physics"

DOI: 10.1088/1367-2630/abb1df

Abstract: The fast and faithful preparation of the ground state of quantum systems is a challenging task but crucial for several applications in the realm of quantum-based technologies. Decoherence poses a limit to the maximum time-window… read more here.

Keywords: state preparation; ground state; bang;
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Deterministic joint remote state preparation via a non-maximally entangled channel

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Published in 2022 at "Physica Scripta"

DOI: 10.1088/1402-4896/accee1

Abstract: Ideal deterministic quantum communication tasks require maximally entangled channels. The reality is that the maximally entangled channel is inevitably degraded to a generally entangled one because of various decoherence mechanisms, seriously deteriorating the performance of… read more here.

Keywords: entangled channel; remote state; maximally entangled; state preparation ... See more keywords
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Joint remote state preparation in multi-hop network under noisy environment

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Published in 2023 at "Physica Scripta"

DOI: 10.1088/1402-4896/acd034

Abstract: Joint remote state preparation is an important method to transmit quantum information with more senders and higher security. In this paper, we present a deterministic joint remote state preparation scheme in multi-hop network with two… read more here.

Keywords: joint remote; state preparation; remote state; multi hop ... See more keywords

State Preparation and Tomography of a Nanomechanical Resonator with Fast Light Pulses.

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Published in 2019 at "Physical review letters"

DOI: 10.1103/physrevlett.123.113601

Abstract: Pulsed optomechanical measurements enable squeezing, nonclassical state creation, and backaction-free sensing. We demonstrate pulsed measurement of a cryogenic nanomechanical resonator with record precision close to the quantum regime. We use these to prepare thermally squeezed… read more here.

Keywords: preparation tomography; state preparation; nanomechanical resonator; state ... See more keywords
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High Fidelity State Preparation and Measurement of Ion Hyperfine Qubits with I>1/2.

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Published in 2022 at "Physical review letters"

DOI: 10.1103/physrevlett.129.130501

Abstract: We present a method for achieving high fidelity state preparation and measurement (SPAM) using trapped ion hyperfine qubits with nuclear spins higher than I=1/2. The ground states of these higher nuclear spin isotopes do not… read more here.

Keywords: state preparation; state; high fidelity; fidelity state ... See more keywords
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Quantum State Preparation with Optimal Circuit Depth: Implementations and Applications.

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Published in 2022 at "Physical review letters"

DOI: 10.1103/physrevlett.129.230504

Abstract: Quantum state preparation is an important subroutine for quantum computing. We show that any n-qubit quantum state can be prepared with a Θ(n)-depth circuit using only single- and two-qubit gates, although with a cost of… read more here.

Keywords: circuit; state preparation; quantum state; circuit depth ... See more keywords