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7. Fast Gates of Detuned Cat Qubit

Author

Schlabes, A., Bhowmick, R., and Ansari, M. H.

Subjects
Quantum Physics
Abstract

Cat qubits have emerged as a promising candidate for quantum computation due to their higher error-correction thresholds and low resource overheads. In existing literature, the detuning of the two-photon drive is assumed to be zero for implementing single and multi-qubit gates. We explore a modification of the Hamiltonian for a range of detuning and demonstrate that high fidelity single qubit gates can be performed even by proper parameter matching. We also analyze the CNOT gate in presence of an approximate detuning term and explain its fidelity improvements through Shortcut to Adiabaticity corrections., Comment: 11 pages, 6 figures

Published
2024

13. Comparative Analysis of Rock Mass Rating and Slope Mass Rating for Slope Stability Assessment of Saptashrungi Gad Temple, Vani, Nashik, Maharashtra, India

Author

Ansari, M. K., Ahmad, M., Singh, Rajesh, Singh, T. N., di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Lu, Xinzheng, Series Editor, Verma, Amit Kumar, editor, Singh, T. N., editor, Mohamad, Edy Tonnizam, editor, Mishra, A. K., editor, Gamage, Ranjith Pathegama, editor, Bhatawdekar, Ramesh, editor, and Wilkinson, Stephen, editor

Published
2025
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17. Sustained aviremia despite anti-retroviral therapy non-adherence in male children after in utero HIV transmission

Author

Bengu, Nomonde, Cromhout, Gabriela, Adland, Emily, Govender, Katya, Herbert, Nicholas, Lim, Nicholas, Fillis, Rowena, Sprenger, Kenneth, Vieira, Vinicius, Kannie, Samantha, van Lobenstein, Jeroen, Chinniah, Kogielambal, Kapongo, Constant, Bhoola, Roopesh, Krishna, Malini, Mchunu, Noxolo, Pascucci, Giuseppe Rubens, Cotugno, Nicola, Palma, Paolo, Tagarro, Alfredo, Rojo, Pablo, Roider, Julia, Garcia-Guerrero, Maria C., Ochsenbauer, Christina, Groll, Andreas, Reddy, Kavidha, Giaquinto, Carlo, Rossi, Paolo, Hong, Seohyun, Dong, Krista, Ansari, M. Azim, Puertas, Maria C., Ndung’u, Thumbi, Capparelli, Edmund, Lichterfeld, Mathias, Martinez-Picado, Javier, Kappes, John C., Archary, Moherndran, and Goulder, Philip

Published
2024
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22. Entangling interactions between artificial atoms mediated by a multimode left-handed superconducting ring resonator

Author

McBroom-Carroll, T., Schlabes, A., Xu, X., Ku, J., Cole, B., Indrajeet, S., LaHaye, M. D., Ansari, M. H., and Plourde, B. L. T.

Subjects
Quantum Physics, Condensed Matter - Superconductivity
Abstract

Superconducting metamaterial transmission lines implemented with lumped circuit elements can exhibit left-handed dispersion, where the group and phase velocity have opposite sign, in a frequency range relevant for superconducting artificial atoms. Forming such a metamaterial transmission line into a ring and coupling it to qubits at different points around the ring results in a multimode bus resonator with a compact footprint. Using flux-tunable qubits, we characterize and theoretically model the variation in the coupling strength between the two qubits and each of the ring resonator modes. Although the qubits have negligible direct coupling between them, their interactions with the multimode ring resonator result in both a transverse exchange coupling and a higher order $ZZ$ interaction between the qubits. As we vary the detuning between the qubits and their frequency relative to the ring resonator modes, we observe significant variations in both of these inter-qubit interactions, including zero crossings and changes of sign. The ability to modulate interaction terms such as the $ZZ$ scale between zero and large values for small changes in qubit frequency provides a promising pathway for implementing entangling gates in a system capable of hosting many qubits., Comment: 8 + 11 pages, 5 + 5 figures, 0 + 3 tables

Published
2023
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25. Targeted metagenomics reveals association between severity and pathogen co-detection in infants with respiratory syncytial virus

Author

Lin, Gu-Lung, Drysdale, Simon B., Snape, Matthew D., O’Connor, Daniel, Brown, Anthony, MacIntyre-Cockett, George, Mellado-Gomez, Esther, de Cesare, Mariateresa, Ansari, M. Azim, Bonsall, David, Bray, James E., Jolley, Keith A., Bowden, Rory, Aerssens, Jeroen, Bont, Louis, Openshaw, Peter J. M., Martinon-Torres, Federico, Nair, Harish, Golubchik, Tanya, and Pollard, Andrew J.

Published
2024
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28. Author Correction: Sustained aviremia despite anti-retroviral therapy non-adherence in male children after in utero HIV transmission

Author

Bengu, Nomonde, Cromhout, Gabriela, Adland, Emily, Govender, Katya, Herbert, Nicholas, Lim, Nicholas, Fillis, Rowena, Sprenger, Kenneth, Vieira, Vinicius, Kannie, Samantha, van Lobenstein, Jeroen, Chinniah, Kogielambal, Kapongo, Constant, Bhoola, Roopesh, Krishna, Malini, Mchunu, Noxolo, Pascucci, Giuseppe Rubens, Cotugno, Nicola, Palma, Paolo, Tagarro, Alfredo, Rojo, Pablo, Roider, Julia, Garcia-Guerrero, Maria C., Ochsenbauer, Christina, Groll, Andreas, Reddy, Kavidha, Giaquinto, Carlo, Rossi, Paolo, Hong, Seohyun, Dong, Krista, Ansari, M. Azim, Puertas, Maria C., Ndung’u, Thumbi, Capparelli, Edmund, Lichterfeld, Mathias, Martinez-Picado, Javier, Kappes, John C., Archary, Moherndran, and Goulder, Philip

Published
2025
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42. An error-protected cross-resonance switch in weakly-tuneable architectures

Author

Xu, Xuexin and Ansari, M.

Subjects
Quantum Physics
Abstract

In two-qubit gates activated by microwave pulses, by turning pulse on or off, the state of qubits are swapped between entangled or idle modes. In either mode, the presence of stray couplings makes qubits accumulate coherent phase error. However, the error rates in the two modes differ because qubits carry different stray coupling strengths in each mode; therefore, eliminating stray coupling from one mode does not remove it from the other. We propose to combine such a gate with a tunable coupler and show that both idle and entangled qubits can become free from stray couplings. This significantly increases the operational switch fidelity in quantum algorithms. We further propose a weakly-tunable qubit as an optimum coupler to bring the two modes parametrically near each other. This remarkably enhances the tuning process by reducing its leakage., Comment: 17 pages, 16 figures. arXiv admin note: substantial text overlap with arXiv:2202.05208

Published
2022
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48. Experimentation on Solar Water Heating Augmented Thermosiphon Evacuated Tube Solar Collector

Author

Atif, K. M., Gupta, M., Ansari, M. S., Yadav, M., Yadav, J. K., Singh, A. K., Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Singh, Achhaibar, editor, Mishra, Debi Prasad, editor, and Bhat, Ganapathi, editor

Published
2024
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49. Predictive Analysis of Telecom Customer Churn Using Machine Learning Techniques

Author

Baby Lavanya, K., Ismail Ansari, M. D., Gundu, Venkateswarlu, Krishna Mohan, G., Mouleswararao, B., Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, E. Balas, Valentina, editor, Prakash, Kolla Bhanu, editor, and Varma, G. P. Saradhi, editor

Published
2024
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50. Performance Analysis of Ann-Based Multi-Input Hybrid Power Conversion System

Author

Yadav, Dilip, Verma, Bijendra Singh, Singh, Gaurav, Singh, Nidhi, Ansari, M. A., Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Pant, Millie, editor, Deep, Kusum, editor, and Nagar, Atulya, editor

Published
2024
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