A novel approach for emulating quantum computers on classical platforms

Xin, Tao

doi:10.1002/que2.18

“…Many research efforts are now focused on the elimination of noises 31 , and the emulation of quantum computers on classical platforms. 32 Applications the likes of quantum adiabatic optimization algorithms, 33 variational quantum eigensolvers, 34 hash preimage attacks, 35 and modeling of viral diffusion, 36 are to all still run on NISQ computers. Therefore, understanding the phase trajectory of measurements for entangled qubits will speed up their eventual adoptions on quantum computers 37 .…”

Section: Discussionmentioning

confidence: 99%

Phase Analysis on the Error Scaling of Entangled Qubits in a 53-Qubit System

Chang

¹

,

Huang

²

,

Chien

³

et al. 2021

Preprint

0

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We have studied carefully the behaviors of entangled qubits on the IBM Rochester with various connectivities and under a “noisy” environment. A phase trajectory analysis based on our measurements of the GHZ-like states is performed. Our results point to an important fact that entangled qubits are “protected” against environmental noise by a scaling property that impacts only the weighting of their amplitudes. The reproducibility of most measurements has been confirmed within a reasonably short gate operation time. But there still are a few combinations of qubits that show significant entanglement evolution in the form of transitions between quantum states. The phase trajectory of an entangled evolution, and the impact of the sudden death of GHZ-like states and the revival of newly excited states are analyzed in details. All observed trajectories of entangled qubits arise under the influences of the newly excited states in a “noisy” intermediate-scale quantum (NISQ) computer.

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“…Today’s quantum computer is still pretty much a NISQ system. Many research efforts are now focused on the elimination of noises 34 , and the emulation of quantum computers on classical platforms 35 . Applications the likes of quantum adiabatic optimization algorithms 36 , variational quantum eigensolvers 37 , hash preimage attacks 38 , and modeling of viral diffusion 39 , are to all still run on NISQ computers.…”

Section: Discussionmentioning

confidence: 99%

Phase analysis on the error scaling of entangled qubits in a 53-qubit system

Huang

¹

,

Chien

²

,

Cho

³

et al. 2021

Sci Rep

2

0

View full text Add to dashboard Cite

We have studied carefully the behaviors of entangled qubits on the IBM Rochester with various connectivities and under a “noisy” environment. A phase trajectory analysis based on our measurements of the GHZ-like states is performed. Our results point to an important fact that entangled qubits are “protected” against environmental noise by a scaling property that impacts only the weighting of their amplitudes. The reproducibility of most measurements has been confirmed within a reasonably short gate operation time. But there still are a few combinations of qubits that show significant entanglement evolution in the form of transitions between quantum states. The phase trajectory of an entangled evolution, and the impact of the sudden death of GHZ-like states and the revival of newly excited states are analyzed in details. All observed trajectories of entangled qubits arise under the influences of the newly excited states in a “noisy” intermediate-scale quantum (NISQ) computer.

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“…When the channel is busy, the sent qubit will pass a Hadamard gate and get the measurement result of |0⟩ or |1⟩ with the probability of 50% separately are likely to be implemented. For example, with the development of quantum computing, both the simulation of quantum information processing on the classical platform 22 and the information processing based on quantum resources 23,24 indicate that it is potential to implement quantum information processing. Therefore, in this article, we propose a protocol to avoid collision by detecting the quantum channel.…”

Section: F I G U R Ementioning

confidence: 99%

Design and analysis of random multiple access quantum key distribution

Zhang

¹

,

Ni

²

2020

Quantum Engineering

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Summary This article proposes a potential application of quantum key distribution in multiuser networks. In modern networks, variety of multiple access technologies are used for multiuser access purposes. In this article, we focus on a type of widely used media access control protocol—carrier‐sense multiple access (CSMA) and analyze the use of carrier‐sense multiple access with collision avoidance (CSMA/CA) for the quantum key distribution in the network. The quantum key generation is based on a successful experiment that implemented the quantum key distribution by using the decoy‐state method. The secret key generation rate as the main indicator of the performance is given, including the relationship between it and the number of stations in the network, and the relationship between the key generation rate and the transmission distance under the multiple access condition as well. In addition, a multiple access quantum key distribution with channel detection protocol is also proposed.

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A novel approach for emulating quantum computers on classical platforms

Cited by 8 publications

References 5 publications

Phase Analysis on the Error Scaling of Entangled Qubits in a 53-Qubit System

Phase Analysis on the Error Scaling of Entangled Qubits in a 53-Qubit System

Phase analysis on the error scaling of entangled qubits in a 53-qubit system

Design and analysis of random multiple access quantum key distribution

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