129 citations · 136 across the 6 of their papers we have counts for
8 papers
Electronic Symmetry and Femtosecond Coherence Dynamics of Renner-Teller-Mixed Neutral Vibronic States in Carbon Dioxide
Eric Liu, Shashank Kumar, Siddhant Pandey +7
When non-adiabatic coupling mixes electronic states of a molecule, vibronic states of different electronic symmetry become interleaved across the same spectral region. The symmetry…
Attosecond Control of Squeezed Light
Russell Zimmerman, Shashank Kumar, Shiva Kant Tiwari +9
Squeezed light is a key resource in quantum metrology and quantum information science. It is primarily generated through nonlinear optical interactions, where the degree of squeezi…
Strong-field Driven Sub-cycle Band Structure Modulation and Dephasing Control
Francis Walz, Shashank Kumar, Amirali Sharifi Olounabadi +6
Over the past decade, ultrafast electron dynamics in the solid state have been extensively studied using various strong light-matter interaction techniques, such as high-harmonic g…
Femtosecond Temporal Phase-Resolved Nonlinear Optical Spectroscopy in Molecules with Lock-in Enabled Phase Tracking
Siddhant Pandey, Francis Walz, Niranjan Shivaram
We describe an experiment to measure the emitted real-time electric field from an ultrafast third-order nonlinear optical interaction in molecules, using a phase-tracked spectral i…
Ultrafast Field-Resolved Nonlinear Optical Spectroscopy in the Molecular Frame
Siddhant Pandey, Liang Z. Tan, Francis Walz +2
We resolve the real-time electric field of a femtosecond third-order nonlinear optical signal in the molecular frame. The electric field emitted by the induced third-order polariza…
Electric Field Measurement of Femtosecond Time-Resolved Four-Wave Mixing Signals in Molecules
Francis Walz, Siddhant Pandey, Liang Z. Tan +1
We report an experiment to measure the femtosecond electric field of the signal emitted from an optical third-order nonlinear interaction in carbon dioxide molecules. Using degener…
Attosecond Entangled Photons from Two-Photon Decay of Metastable Atoms: A Source for Attosecond Experiments and Beyond
Yimeng Wang, Siddhant Pandey, Chris H. Greene +1
We propose the generation of attosecond entangled bi-photons in the extreme-ultraviolet regime by two-photon decay of a metastable atomic state as a source similar to spontaneous p…
Femtosecond Laser Writing of Spin Defects in Hexagonal Boron Nitride
Xingyu Gao, Siddhant Pandey, Mehran Kianinia +5
Optically active spin defects in wide-bandgap materials have many potential applications in quantum information and quantum sensing. Spin defects in two-dimensional layered van der…