Demonstration of 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mn>1</mml:mn><mml:mo>→</mml:mo><mml:mn>3</mml:mn></mml:mrow></mml:math>
 continuous-variable quantum telecloning

Wang, Qingwei; Li, Wei; Wu, Yimiao; Yao, Wenxiu; Fan, Li; Liang, Tian; Wang, Yajun; Zheng, Yaohui

doi:10.1103/physreva.104.032419

Cited by 8 publications

(2 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Interestingly, this tremendous progress and success in this field does not limit the research directions, but on the contrary, widens it. In the theoretical frontier, in the last couple of years alone, several new and interesting facets have emerged in this field which include port based quantum teleportation [20][21][22][23], fidelity enhancement of noisy QT using quantum switch [24][25][26][27], teleportation involving multiple parties [28][29][30][31], multiround quantum teleportation using weak measurements [32], fidelity deviation in QT [33].…”

Section: Introductionmentioning

confidence: 99%

Significance of Fidelity Deviation in Continuous Variable Teleportation

Patra,

Gupta,

Roy

et al. 2022

Preprint

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Significance of Fidelity Deviation in Continuous Variable Teleportation

Patra,

Gupta,

Roy

et al. 2022

Preprint

View full text Add to dashboard Cite

“…The extension to continuous-variable telecloning of 1 → M optimal symmetric clones was later introduced [44]. Recently, 1 → 3 continuous-variable telecloning has been experimentally demonstrated [45].…”

Section: Introductionmentioning

confidence: 99%

Quantum Telecloning on NISQ Computers

Pelofske,

Bärtschi,

Garcia

et al. 2022

Preprint

View full text Add to dashboard Cite

Due to the no-cloning theorem, generating perfect quantum clones of an arbitrary quantum state is not possible, however approximate quantum clones can be constructed. Quantum telecloning is a protocol that originates from a combination of quantum teleportation and quantum cloning. Here we present 1 → 2 and 1 → 3 quantum telecloning circuits, with and without ancilla, that are theoretically optimal (meaning the clones are the highest fidelity allowed by quantum mechanics), universal (meaning the clone fidelity is independent of the state being cloned), and symmetric (meaning the clones all have the same fidelity). We implement these circuits on gate model IBMQ and Quantinuum NISQ hardware and quantify the clone fidelities using parallel single qubit state tomography. Quantum telecloning using mid-circuit measurement with real time if statements is demonstrated on the Quantinuum H1-2 device. Two alternative implementations of quantum telecloning (deferred measurement and post selection) are demonstrated on ibmq montreal for cases where mid-circuit measurement with real time if statements are not available. Our results show that NISQ devices can achieve near-optimal quantum telecloning fidelity; for example the Quantinuum H1-2 device running the telecloning circuits without ancilla achieved a mean clone fidelity of 0.824 for two clone circuits and 0.765 for three clone circuits (the theoretical fidelity limits are 0.833 for two clones and 0.77 for three clones). This demonstrates the viability of performing experimental analysis of quantum information networks and quantum cryptography protocols on NISQ computers.

show abstract