About the Authors

Shweta Agarwal

Affiliation Quantum Optics and Photon Physics, CSIR-National Physical Laboratory, New Delhi, India

Deepak Kumar Jangir

Affiliation Quantum Optics and Photon Physics, CSIR-National Physical Laboratory, New Delhi, India

Ranjana Mehrotra

ranjana@mail.nplindia.ernet.in

Affiliation Quantum Optics and Photon Physics, CSIR-National Physical Laboratory, New Delhi, India

Neelam Lohani

Affiliation Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India

M. R. Rajeswari

Affiliation Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SA DKJ RM NL MRR. Performed the experiments: SA NL. Analyzed the data: SA DKJ RM. Contributed reagents/materials/analysis tools: RM MRR. Contributed to the writing of the manuscript: SA DKJ RM.