Entangled State Preparation for Non-Binary Quantum Computing

2019 ◽  
Author(s):  
Kaitlin N. Smith ◽  
Mitchell A. Thornton
Keyword(s):  
Quantum Computing ◽  
Entangled State ◽  
State Preparation

scholarly journals Optimal teleportation via noisy quantum channels without additional qubit resources

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Dong-Gil Im ◽  
Chung-Hyun Lee ◽  
Yosep Kim ◽  
Hyunchul Nha ◽  
M. S. Kim ◽  
...  
Keyword(s):  
Quantum Computing ◽  
Quantum Teleportation ◽  
Quantum Communication ◽  
Quantum Noise ◽  
Single Copy ◽  
Entangled State ◽  
Quantum Network ◽  
Quantum Channels ◽  
Maximally Entangled State ◽  
Near Term

AbstractQuantum teleportation exemplifies how the transmission of quantum information starkly differs from that of classical information and serves as a key protocol for quantum communication and quantum computing. While an ideal teleportation protocol requires noiseless quantum channels to share a pure maximally entangled state, the reality is that shared entanglement is often severely degraded due to various decoherence mechanisms. Although the quantum noise induced by the decoherence is indeed a major obstacle to realizing a near-term quantum network or processor with a limited number of qubits, the methodologies considered thus far to address this issue are resource-intensive. Here, we demonstrate a protocol that allows optimal quantum teleportation via noisy quantum channels without additional qubit resources. By analyzing teleportation in the framework of generalized quantum measurement, we optimize the teleportation protocol for noisy quantum channels. In particular, we experimentally demonstrate that our protocol enables to teleport an unknown qubit even via a single copy of an entangled state under strong decoherence that would otherwise preclude any quantum operation. Our work provides a useful methodology for practically coping with decoherence with a limited number of qubits and paves the way for realizing noisy intermediate-scale quantum computing and quantum communication.

scholarly journals Measurement and State Preparation via Ion Trap Quantum Computing

1998 ◽  
Vol 46 (4-5) ◽  
pp. 391-399 ◽  
Author(s):  
S. Schneider ◽  
H.M. Wiseman ◽  
W.J. Munro ◽  
G.J. Milburn
Keyword(s):  
Quantum Computing ◽  
Ion Trap ◽  
State Preparation

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.

Two novel schemes for probabilistic remote state preparation and the physical realization via the linear optics

2016 ◽  
Vol 14 (01) ◽  
pp. 1650003 ◽  
Author(s):  
Jiahua Wei ◽  
Hong-Yi Dai ◽  
Ming Zhang ◽  
Le Yang ◽  
Jingsong Kuang
Keyword(s):  
Partial Information ◽  
Research Field ◽  
Remote State Preparation ◽  
Entangled State ◽  
The Novel ◽  
Linear Optics ◽  
Maximally Entangled State ◽  
Application Range ◽  
State Preparation ◽  
Arbitrary Quantum

In this paper, we put forward two novel schemes for probabilistic remote preparation of an arbitrary quantum state with the aid of appropriate local unitary operations when the sender and the receiver only have partial information of non-maximally entangled state, respectively. The concrete implementation procedures of the novel proposals are given in detail. Additionally, the physical realizations of our proposals are discussed based on the linear optics. Because of that neither the sender nor the receiver need to know fully the information of the partially entangled state, our schemes are useful to not only expand the application range of quantum entanglement, but also enlarge the research field of probabilistic remote state preparation (RSP).

Deterministic Remote Entangled State Preparation Using Cluster State in Cavity QED

2014 ◽  
Vol 53 (12) ◽  
pp. 4402-4406 ◽  
Author(s):  
Peng-Fei Duan ◽  
Wei-Long Duan ◽  
Qiong-Si Fu ◽  
Min Tang ◽  
Pei-Hua Chen
Keyword(s):  
Cavity Qed ◽  
Cluster State ◽  
Entangled State ◽  
State Preparation

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.

GENERATION OF ENTANGLED STATES OF TWO DISTANT CAVITY MODES VIA JOSEPHSON JUNCTION BASED DEVICES

2007 ◽  
Vol 05 (01n02) ◽  
pp. 83-88
Author(s):  
ROSANNA MIGLIORE ◽  
ANTONINO MESSINA
Keyword(s):  
Quantum Computing ◽  
Josephson Junction ◽  
Entangled States ◽  
Entangled State ◽  
Simple Scheme ◽  
Microwave Cavities ◽  
Theoretical Scheme ◽  
Cavity Modes ◽  
Coupling Strengths ◽  
Squid Rings

We present a simple scheme for the preparation of entangled states of the e.m. modes of two spatially separated microwave cavities exploiting their interaction with two superconducting SQUID rings embedded within them. The scheme requires that the two SQUID qubits are initially prepared in an entangled state and the possibility of controlling both the coupling strengths and the interaction times. We also briefly discuss the importance of such a theoretical scheme in view of possible applications in the context of quantum computing and its experimental feasibility.

Sign in / Sign up

Export Citation Format

Share Document