Publications...

JOURNAL PUBLICATIONS

1. S. Haldar, H. Havir, W. Khan, S. Lehmann, C. Thelander, K. A. Dick, and V.F. Maisi, “Energetics of Microwaves Probed by Double Quantum Dot Absorption” Physical Review Letters 130, 08700325 (2023). [Editor’s Suggestion]

2. S. Haldar, D. Zenelaj, P.P. Potts, H. Havir, S. Lehmann, K.A. Dick, P. Samuelsson, V.F. Maisi, “Microwave power harvesting using resonator-coupled double quantum dot photodiode” Physical Review B (Letters), 109, L081403 (2024). 

3. H. Havir, S. Haldar, W. Khan, S. Lehmann, K. A. Dick, C. Thelander, P. Samuelsson, V. F. Maisi, “Quantum Dot Source-Drain Transport Response at Microwave Frequencies” Physical Review B 108, 205417 (2023).

4. A. Ranni, H. Havir, S. Haldar, V.F. Maisi, “High impedance Josephson junction resonators in the transmission line geometry” Applied Physics Letters 123, 114002 (2023).

5. S. Haldar, V.K. Dixit, G. Vashisht, S.K. Khamari, S. Porwal, T.K. Sharma, and SM Oak, “Effect of carrier confinement on effective mass of excitons and estimation of ultralow disorder in AlxGa1−xAs/GaAs quantum wells by magneto-photoluminescence” Scientific Reports 7, 4905 (2017).

6. S. Haldar, V.K. Dixit, G. Vashisht, S. Porwal, and T.K. Sharma, “Effect of magnetic field on free and bound exciton luminescence in GaAs/AlGaAs multiple quantum well structure: A quantitative study on the estimation of ultra-low disorder” Journal of Physics D: Applied Physics 50, 335107 (2017).

7. S. Haldar, G. Vashisht, S. Porwal T.K. Sharma, and V.K. Dixit, “Simultaneous magneto-electro-optical measurements in modulation-doped quantum well: an investigation on magneto-photoluminescence intensity oscillations” Journal of Applied Physics 125, 205701 (2019). 

8. S. Haldar, A. Banerjee, G. Vashisht, S. Porwal, T.K. Sharma, and V.K. Dixit, “A parallel magnetic field driven confinement versus separation of charges in GaAs quantum well investigated by magneto-photovoltage and magneto-photoluminescence spectroscopy” Journal of Luminescence 206, 342 (2019). 

9. S. Haldar, V.K. Dixit, G. Vashisht, S. Porwal, and T.K. Sharma, “Radiative recombination efficiency and effective mass of thermally activated magneto-excitons probed by quasi-simultaneous magneto-photoluminescence and magneto-surface photovoltage spectroscopy” Journal of Applied Physics 124, 055704 (2018). 

10. S. Haldar, A. Banerjee, K. Kumar, R. Kumar, G. Vashisht, T.K. Sharma, and V.K. Dixit, “Anisotropic magnetic properties of excitons in GaAs multiple quantum wells” Superlattices & Microstructures 137, 106332 (2020). 

11. S. Haldar, S. Kumar, R. Roychowdhury, and V.K. Dixit “Photovoltaic Response and Charge Redistribution Processes in GaAs/AlGaAs Multiple-Quantum Wells Structure” Phys. Status Solidi B 257, 2000331 (2020)

12. S. Haldar, G. Vashisht, U.K. Ghosh, A.K. Jaiswal, S. Porwal, A. Khakha, T.K. Sharma, and V.K. Dixit, “Development of a simple and cost effective maskless photolithography system” AIP Conference Proceedings 2115, 030219 (2019). 

13. G Vashisht, S Porwal, S Haldar, and VK Dixit “Influence of interface states on built-in electric field and diamagnetic-Landau energy shifts in asymmetric modulation-doped InGaAs/GaAs QWs” Journal of Physics D: Applied Physics 55 (38), 385101 (2022),

14. G. Vashisht, V.K. Dixit, S. Haldar, and T.K. Sharma, “Effect of disorders on the optical properties of excitons in InAsP/InP quantum wells investigated by magneto-photoluminescence spectroscopy” Journal of Optical Society of America - B 35, 2405 (2018). 

15. P. Pal, S. Haldar, S.S. Singh, A. Ashok, X. Yan, and K. Sato, “A detailed investigation and explanation of the appearance of different undercut profiles in KOH and TMAH” Journal of Micromechanics and Microengineering 24, 9 (2014). (from M.Sc. project)

16. P. Pal, A. Ashok, S. Haldar, Y. Xing, and K. Sato, “Anisotropic etching in low-concentration KOH: Effects of surfactant concentration” Micro & Nano Letters 10, 224 (2015). (from M.Sc. project)

UNDER REVIEW

1. S. Haldar, D. Barker, H. Havir, A. Ranni, S. Lehmann, K.A. Dick, V.F. Maisi, “Continuous microwave photon counting by semiconductor-superconductor hybrids” arXiv:2401.06617  (Under review). 

2. A. Ranni, S. Haldar, H. Havir, S. Lehmann, P. Scarlino, A. Baumgartner, C. Schönenberger, C. Thelander, K. A. Dick, P. P. Potts, V. F. Maisi, “Dephasing in a crystal-phase defined double quantum dot charge qubit strongly coupled to a high-impedance resonator” arXiv:2308.14887 (Under review).

OTHER REPORTS/CONFERENCE PROCEEDINGS

1. S. Haldar and V.K. Dixit “Physics and applications of semiconductor quantum wells under high magnetic field” RRCAT News Letter, 34 (1), 32-39 (2021).

2. G Vashisht, S Haldar, S Porwal, R Kumar, VK Dixit “Electric and magnetic field effects on the exciton localization in a modulation doped InGaAs/GaAs quantum well” AIP Conference Proceedings 2265, 030483 (2020).

3. H. Darji, G. Vashisht, R. Roychowdhury, S. Haldar, S.K. Khamari, V.K. Dixit, and T.K. Sharma “Role of Surface and Interface States on the Performance of GaAs Based Photodetectors” National Conference on Physics and Chemistry of Materials, Indore, India 2018, AIP Conference Proceedings 2100, 020059 (2019).

4. E. R. Aarathy, G. Vashisht, S. Haldar, R. Roychowdhury, T.K. Sharma, and V. K. Dixit “Development of Symmetric and Asymmetric Waveguide Laser Diode Arrays” 27th National Lasers Symposium, Raja Ramanna Centre for Advanced Technology, Indore, India (2018).

5. V. K. Dixit, S.K. Khamari, S. Porwal, A. Chatterjee, G. Vashisht, S. Haldar, A. Khakha, V. Agnihotri, R. Kumar, T.K. Sharma, and KS Bindra “Investigation into the complexities in active region of quantum well laser diode arrays”, Kiran: A Bulletin of the Indian Laser Association 28, (2016).

ORAL PRESENTATIONS

1. S Haldar et al. “One photon at a time: Detection of individual microwave photons using cavity-coupled quantum dots” Nano Lund Annual Meeting, Lund University, Sweden (2023)

2. S Haldar et al. “Towards continuous and efficient microwave photon-counter using semiconductor-superconductor hybrids” Department of Physics, Aalto University, Finland (2022)

3. S Haldar et al. “Towards continuous and efficient microwave photon-counter using semiconductor-superconductor hybrids” Wallenberg Centre for Quantum Technology Annual Meeting, Chalmers University, Sweden (2022)

4. S. Haldar et al. “Interdependence of magneto-photoluminescence and quantum Hall effect in modulation-doped GaAs/AlGaAs quantum well”, Contributory talk, Department of Physics, Lancaster University, United Kingdom (2019).

5. S. Haldar et al. “Interdependence of magneto-photoluminescence and quantum Hall effect in modulation-doped GaAs/AlGaAs quantum well”, UK Semiconductors 2019, University of Sheffield, United Kingdom (2019).

6. S. Haldar “Indigenous and inexpensive maskless-photolithography system for semiconductor devices development”, 34th Madhya Pradesh Young Scientist Congress - 2019, Bhopal, India (2019).

7. S. Haldar et al. “Development of simple cost-effective maskless photolithography system”, 63rd DAE - Solid State Physics Symposium, Guru Jambheshwar University of Science & Technology, Haryana, India (2018).

8. S. Haldar et al. “Effect of barrier layer on the effective mass of excitons in GaAs/AlxGa1-xAs QWs investigated via Magneto-PL spectroscopy” 19th International workshop on the physics of semiconductor devices, IIT Delhi, Delhi, India (2017).

9. S. Haldar et al. “Role of disorder and multi-valley scattering on the dynamics and effective mass of excitons in AlxGa1-xAs/GaAs quantum wells investigated by magneto-photoluminescence” Condensed Matter Physics Under Extreme Condition-Symposium, Bhabha Atomic Research Centre (BARC), Mumbai, India (2016).

10. S. Haldar et al. “An experimental investigation on the appearance of different planes at convex corner In TMAH and KOH solutions” International Conference on Advanced Trends in Engineering and Technology, Arya Institute of Engineering & Technology, Jaipur, India (2014).

POSTER PRESENTATION

1. S. Haldar et al. “Detection of individual microwave photons using cavity-coupled quantum dots”, Nano Lund Annual meeting 2023, Lund University, Sweden (2023).

2. S. Haldar et al. “Microwave power harvesting using cavity coupled double quantum dots”, Nano Lund Annual meeting 2022, Lund University, Sweden (2022).

3. S. Haldar et al. “Effect of magnetic field on the radiative recombination efficiency of excitons and trions in GaAs/AlGaAs quantum well”, 27th National Lasers Symposium, Raja Ramanna Centre for Advanced Technology, Indore, India (2018).

4. S. Haldar et al. “Development of simple cost-effective maskless photolithography system”, 63rd DAE - Solid State Physics Symposium, Guru Jambheshwar University of Science & Technology, Haryana, India (2018).

5. S. Haldar et al. “Effect of barrier layer on the effective mass of excitons in GaAs/AlxGa1-xAs QWs investigated via Magneto-PL spectroscopy” 19th International workshop on the physics of semiconductor devices, IIT Delhi, Delhi, India (2017).

6. S. Haldar et al. “Role of disorder and multi-valley scattering on the dynamics and effective mass of excitons in AlxGa1-xAs/GaAs quantum wells investigated by magneto-photoluminescence” Condensed Matter Physics Under Extreme Condition-Symposium, Bhabha Atomic Research Centre (BARC), Mumbai, India (2016).

7. G. Vashisht, S. Haldar*, S. Porwal, R. Kumar, V.K. Dixit “Electric and Magnetic Field Effects on the Exciton Localization in a Modulation Doped InGaAs/GaAs Quantum Well” 64th DAE-Solid state Physics Symposium, Indian Institute of Technology Jodhpur, India (2019). [*Presenting Author]