Quantum Locker Using a Novel Verification Algorithm and Its Experimental Realization in IBM Quantum Computer

Dash, Avinash; Rout, Sumit; Behera, Bikash K.; Panigrahi, Prasanta K.

doi:10.48550/arxiv.1710.05196

Cited by 8 publications

(8 citation statements)

References 42 publications

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“…IBM quantum experience now plays a significant role in quantum computing community for giving access to two five-qubit and one sixteen-qubit quantum processors named as ibmqx2, ibmqx4 and ibmqx5 respectively. A number of quantum tasks such as quantum algorithms [41,42,43,44,45], quantum error correction code [46,47,48], quantum state and gate teleportation [49,50], quantum information theory [51,52,53,54,55,56,57], quantum simulation [58,59], quantum machine learning [60], quantum artificial intelligence [61], quantum communication devices [62,63,64], have been realized using both five-qubit and sixteen-qubit quantum processors. Here, we consider three qubits, among which one is control and the other two act as the signal qubits.…”

Section: Introductionmentioning

confidence: 99%

Designing quantum router in IBM quantum computer

Behera

Reza

Gupta

et al. 2019

Quantum Inf Process

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Quantum router is an essential ingredient in a quantum network. Here, we propose a new quantum circuit for designing quantum router by using IBM's fivequbit quantum computer. We design an equivalent quantum circuit, by the means of single-qubit and two-qubit quantum gates, which can perform the operation of a quantum router. Here, we show the routing of signal information in two different paths (two signal qubits) which is directed by a control qubit. According to the process of routing, the signal information is found to be in a coherent superposition of two paths. We demonstrate the quantum nature of the router by illustrating the entanglement between the control qubit and the two signal qubits (two paths), and confirm the well preservation of the signal information in either of the two paths after the routing process. We perform quantum state tomography to verify the generation of entanglement and preservation of information. It is found that the experimental results are obtained with good fidelity.Quantum communication is the process of transferring quantum states from one place to another. It plays an important role in the field of quantum information processing [1]. Communication networks are the indispensable technology to transmit quantum information over long distances among the parties connected in a network. Although, classical laws of physics are used for classical communication, it has been predicted that applying the principles of quantum physics and quantum information can enhance the efficiency of communication devices [2,3,4] significantly even if using the similar resources and network architecture [5,6]. Quantum internet has been proposed by Kimble [7], which shows a significant improvement in the area of quantum communication from both the theoretical and experimental aspects. The most notable result has been observed in quantum cryptography [8,9], which can be used for unconditional secure transmission of information. Quantum effects such as arXiv:1803.06530v1 [quant-ph]

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Section: Introductionmentioning

confidence: 99%

Designing quantum router in IBM quantum computer

Behera

Reza

Gupta

et al. 2019

Quantum Inf Process

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“…These include observation of Uhlmann phase 19 , chemical isomerization reaction 20 , simulation of far-fromequilibrium dynamics 21 , Ising model simulation 22 , quantum multi-particle tunneling 23 , quantum scrambling 24 , and simulation of Klein-Gordon equation 25 to name a few. Other sub-disciplines such as developing quantum algorithms [26][27][28][29][30][31][32][33] , testing of quantum information theoretical tasks [34][35][36][37][38] , quantum cryptography [39][40][41][42] , quantum error correction [43][44][45][46] , quantum applications [47][48][49][50][51][52] have also been explored.…”

Section: Introductionmentioning

confidence: 99%

Experimental Demonstration of Force Driven Quantum Harmonic Oscillator in IBM Quantum Computer

Baishya,

Kumar,

Behera

et al. 2019

Preprint

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Though algorithms for quantum simulation of Quantum Harmonic Oscillator (QHO) have been proposed, still they have not yet been experimentally verified. Here, for the first time, we demonstrate a quantum simulation of QHO in the presence of both time-varying and constant force field for both one and two dimensional case. New quantum circuits are developed to simulate both the one and two-dimensional QHO and are implemented on the real quantum chip "ibmqx4". Experimental data, clearly illustrating the dynamics of QHO in the presence of time-dependent force field, are presented in graphs for different frequency parameters in the Hamiltonian picture.

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“…We attempt to test the protocol by using the IBM quantum processor, 'ibmqx4' by simulating two spin Ising model for Rydberg atoms [19][20][21] . The IBM Quantum Experience allows the quantum computing community to access multiple quantum processors and a large number of experiments have been done using their platform [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] . As Ising spin model is a two spin level model it is conducive to study through quantum computation techniques by using qubits.…”

Section: Introductionmentioning

confidence: 99%

Application of quantum scrambling in Rydberg atom on IBM quantum computer

Aggarwal¹,

Raj²,

Behera³

et al. 2018

Preprint

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Quantum scrambling measured by out-of-time-ordered correlator (OTOC) has an important role in understanding the physics of black holes and evaluating quantum chaos. It is known that Rydberg atom has been a general interest due to its extremely favourable properties for building a quantum simulator. Fast and efficient quantum simulators can be developed by studying quantum scrambling in related systems. Here we present a general quantum circuit to theoretically implement an interferometric protocol which is a technique proposed to measure OTOC functions. We apply this circuit to measure OTOC and hence the quantum scrambling in a simulation of a 1-D Ising spin model for Rydberg atom. We apply this method to both initial product and entangled states to compare the scrambling of quantum information in both cases. Finally we discuss other constructions where this technique can

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Quantum Locker Using a Novel Verification Algorithm and Its Experimental Realization in IBM Quantum Computer

Cited by 8 publications

References 42 publications

Designing quantum router in IBM quantum computer

Designing quantum router in IBM quantum computer

Experimental Demonstration of Force Driven Quantum Harmonic Oscillator in IBM Quantum Computer

Application of quantum scrambling in Rydberg atom on IBM quantum computer

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