scholarly journals REMOTE PREPARATION OF THE TWO-PARTICLE STATE

2008 ◽  
Vol 06 (03) ◽  
pp. 485-491 ◽  
Author(s):  
FENG-LI YAN ◽  
GUO-HUA ZHANG
Keyword(s):  
Quantum Channel ◽  
Remote State Preparation ◽  
Particle State ◽  
State Preparation ◽  
Einstein Podolsky Rosen ◽  
Remote Preparation

We present a scheme of remote preparation of the two-particle state by using two Einstein–Podolsky–Rosen pairs or two partially entangled two-particle states as the quantum channel. The probability of the successful remote state preparation is obtained.

REMOTE STATE PREPARATION IN NON-MARKOVIAN ENVIRONMENT

2012 ◽  
Vol 10 (03) ◽  
pp. 1250030 ◽  
Author(s):  
YANLIANG ZHANG ◽  
QINGPING ZHOU ◽  
GUODONG KANG ◽  
FANG ZHOU ◽  
XIAOBO WANG
Keyword(s):  
Quantum Channel ◽  
Communication Channel ◽  
Quantum Communication ◽  
Remote State Preparation ◽  
Entangled States ◽  
Particle State ◽  
Noisy Environments ◽  
Initial State ◽  
State Preparation ◽  
Over Time

We present a scheme for remote preparing a general two-particle state by two entangled states serving as the quantum communication channel. In this scheme, it is possible for the receiver to perfectly reconstruct the initial state that the sender hopes to prepare with the method of introducing an auxiliary qubit and postselection measurements in the situation of non-maximal entangled quantum channel. Furthermore, we investigate the influence of the dissipation factors on the processing of the remote state preparation when the entangled resources are in the Markovian and non-Markovian noisy environments. It is shown that the fidelity of remote state preparation is decreasing exponentially over time in Markovian environments and attenuating oscillatorily in non-Markovian. However, when the non-Markovian and the detuning conditions are satisfied simultaneously, the fidelity can be preserved at comparative high levels, effectively.

Effect of noise on deterministic remote preparation of an arbitrary two-qudit state by using a four-qudit χ-type state as the quantum channel

2020 ◽  
Vol 18 (05) ◽  
pp. 2050028
Author(s):  
Li Lv ◽  
Ping Zhou
Keyword(s):  
Positive Operator ◽  
Quantum Channel ◽  
Remote State Preparation ◽  
Quantum Decoherence ◽  
Noisy Environments ◽  
Text Type ◽  
State Preparation ◽  
Different Types ◽  
Remote Preparation ◽  
Noise Models

We present a protocol for remote preparation of an arbitrary two-qudit state by using a four-qudit [Formula: see text]-type state as the quantum channel via positive operator-valued measurement. We first propose the protocol for remote preparation of an arbitrary two-qudit state via positive operator-valued measurement in noiseless environment and then discuss the protocol in noisy environments. Four important quantum decoherence noise models, the dephasing noise, the qudit-flip noise, the qudit-phase-flip noise and the depolarizing noise, are considered in our protocol. The output states and the fidelities of remote state preparation in four different types of quantum noises are presented. It is shown the protocol for remote state preparation via positive operator-valued measurement with [Formula: see text]-type state has the advantage of transmitting less particles for remote preparing an arbitrary two-qudit state. The fidelities of remote state preparation depend on the coefficients of original two-qudit state and the decoherence rates of the noise models.

MULTIPARTY REMOTELY PREPARING MULTIPARTITE EQUATORIAL ENTANGLED STATES IN HIGH DIMENSIONS

2011 ◽  
Vol 09 (06) ◽  
pp. 1437-1448
Author(s):  
YI-BAO LI ◽  
KUI HOU ◽  
SHOU-HUA SHI
Keyword(s):  
Quantum State ◽  
Quantum Channel ◽  
Success Probability ◽  
Quantum States ◽  
Remote State Preparation ◽  
Entangled States ◽  
Entangled State ◽  
High Dimensions ◽  
Original State ◽  
State Preparation

We propose two kinds of schemes for multiparty remote state preparation (MRSP) of the multiparticle d-dimensional equatorial quantum states by using partial entangled state as the quantum channel. Unlike more remote state preparation scheme which only one sender knows the original state to be remotely prepared, the quantum state is shared by two-party or multiparty in this scheme. We show that if and only if all the senders agree to collaborate with each other, the receiver can recover the original state with certain probability. It is found that the total success probability of MRSP is only by means of the smaller coefficients of the quantum channel and the dimension d.

One-party controlled minimum remote state preparation of equatorial n-qubit states

2014 ◽  
Vol 12 (06) ◽  
pp. 1450038 ◽  
Author(s):  
Yahong Wang ◽  
Hongwei Liang
Keyword(s):  
Quantum Channel ◽  
Ghz State ◽  
Qubit State ◽  
Remote State Preparation ◽  
Bloch Sphere ◽  
State Preparation ◽  
Epr Pairs ◽  
Controlled Remote State Preparation ◽  
Qubit States

This paper offers a theoretical protocol for one-party controlled remote state preparation (RSP) of n-qubit states with minimum resources consumption. We are mainly focused on the case of the n-qubit state chosen from equatorial circle on a Bloch sphere. We use n - 1 EPR pairs and one GHZ state as quantum channel and show that only n + 1 cbits, n ebits and 2n + 1 qubits are consumed during the controlled RSP processing.

Controlled cyclic remote state preparation of single-qutrit equatorial states

2021 ◽  
Author(s):  
Jin Shi
Keyword(s):  
Quantum Channel ◽  
Remote State Preparation ◽  
Entangled State ◽  
State Preparation ◽  
Single Qudit

The scheme for controlled unidirectional cyclic remote state preparation of single-qutrit equatorial states is put forward. Alice, Bob, Charlie, and David share a seven-qutrit entangled state as the quantum channel. Under the control of David, Alice can remotely prepare a single-qutrit equatorial state at Bob’s site, Bob can remotely prepare a single-qutrit equatorial state at Charlie’s site, Charlie can remotely prepare a single-qutrit equatorial state at Alice’s site simultaneously. The direction of controlled unidirectional cyclic remote state preparation can be reversed by changing measured qutrits of the quantum channel. The scheme for controlled bidirectional cyclic remote state preparation of single-qutrit equatorial states is also proposed. The schemes can be generalized to controlled unidirectional and bidirectional multi-party cyclic remote state preparation of single-qudit equatorial states.

Sign in / Sign up

Export Citation Format

Share Document