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Article

Photon Enhanced Interaction and Entanglement in Semiconductor Position-Based Qubits

1
School of Electrical and Electronic Engineering, University College Dublin, Dublin 4, Ireland
2
Equal1. Labs, Fremont, CA 94536, USA
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Appl. Sci. 2019, 9(21), 4534; https://doi.org/10.3390/app9214534
Received: 6 September 2019 / Revised: 3 October 2019 / Accepted: 18 October 2019 / Published: 25 October 2019
(This article belongs to the Special Issue Optics for AI and AI for Optics)
CMOS technologies facilitate the possibility of implementing quantum logic in silicon. In this work, we discuss a minimalistic modelling of entangled photon communication in semiconductor qubits. We demonstrate that electrostatic actuation is sufficient to construct and control desired potential energy profiles along a Si quantum dot (QD) structure allowing the formation of position-based qubits. We further discuss a basic mathematical formalism to define the position-based qubits and their evolution under the presence of external driving fields. Then, based on Jaynes–Cummings–Hubbard formalism, we expand the model to include the description of the position-based qubits involving four energy states coupled with a cavity. We proceed with showing an anti-correlation between the various quantum states. Moreover, we simulate an example of a quantum trajectory as a result of transitions between the quantum states and we plot the emitted/absorbed photos in the system with time. Lastly, we examine the system of two coupled position-based qubits via a waveguide. We demonstrate a mechanism to achieve a dynamic interchange of information between these qubits over larger distances, exploiting both an electrostatic actuation/control of qubits and their photon communication. We define the entanglement entropy between two qubits and we find that their quantum states are in principle entangled. View Full-Text
Keywords: entanglement; charge qubit; position-based semiconductor qubits; cryogenic technologies; semiconductor photon communication; Jaynes–Cummings–Hubbard formalism entanglement; charge qubit; position-based semiconductor qubits; cryogenic technologies; semiconductor photon communication; Jaynes–Cummings–Hubbard formalism
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MDPI and ACS Style

Giounanlis, P.; Blokhina, E.; Leipold, D.; Staszewski, R.B. Photon Enhanced Interaction and Entanglement in Semiconductor Position-Based Qubits. Appl. Sci. 2019, 9, 4534. https://doi.org/10.3390/app9214534

AMA Style

Giounanlis P, Blokhina E, Leipold D, Staszewski RB. Photon Enhanced Interaction and Entanglement in Semiconductor Position-Based Qubits. Applied Sciences. 2019; 9(21):4534. https://doi.org/10.3390/app9214534

Chicago/Turabian Style

Giounanlis, Panagiotis, Elena Blokhina, Dirk Leipold, and Robert B. Staszewski 2019. "Photon Enhanced Interaction and Entanglement in Semiconductor Position-Based Qubits" Applied Sciences 9, no. 21: 4534. https://doi.org/10.3390/app9214534

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