Preprints:
1.
Mehmet Emre Tasgin and Hyunchul Nha, Measurable
entanglement criterion for extended Bose-Hubbard model, arXiv:2402.05477
(2024).
2.
Hira Asif, Alpan Bek, Mehmet Emre Tasgin
and Ramazan Sahin, Voltage-tunable quantum control of extraordinary
optical transmission in the visible regime, arXiv:2311.02949 (2024).
3.
Shakir Ullah, M. E. Tasgin, R. V. Ovali,
Mehmet Gunay, Electrically-programmable frequency
comb for compact quantum photonic circuits, arXiv:2308.00439
4.
M. E. Tasgin, Energy of the symmetrization entanglement, arXiv:2302.10191 (2023).
5.
R. V. Ovali, S. Ullah, M. Günay, M. E. Tasgin, Environmental-induced work extraction,
arXiv:2310.17809 (2023).
6.
M. E. Tasgin, Flux
quantization and electron-positron pair creation (GENERALIZED).
7.
M. E. Tasgin, Quantization
of magnetic flux and electron-positron pair creation.
8. M. Emre Tasgin, Entanglement
& violation of Kramers-Kronig relations, presentation
@ YouTube
9.
M. E. Tasgin, Anatomy of Entanglement and Nonclassicality criteria, arXiv:1901.04045
10.
You-Lin Chuang and M. E. Tasgin, Coherent control of optical bistability in Rydberg electromagnetically-induced
transparency atomic system, arXiv:1811.04776
PUBLICATION LIST
Book Chapter:
(Chapter
1 available in Google Books)
Publications:
1.
Hira
Asif, Mehmet Emre Tasgin and Ramazan Sahin, All-optical
control of ultrafast plasmon resonances in the pulse-driven extraordinary
optical transmission, Journal of Optics 25, 075501 (2023). [Editors
top 10 pick in half 2023].
2.
Mehmet
Günay, Priyam Das, Emre Yüce, Emre Ozan Polat, Alpan Bek and Mehmet Emre Tasgin, On-demand
continuous-variable quantum entanglement source for integrated circuits,
Nanophotonics 12, 229-237 (2023).
3. Asli Gencaslan, Taner Tarik Aytas, Hira Asif,
Mehmet Emre Tasgin, Ramazan Sahin, Silent-enhancement
of multiple Raman modes via tuning optical properties of graphene
nanostructures, The European
Physical Journal Plus 137, 1330 (2022). arXiv:2206.05405
4. Mehmet Günay, Ahmet Cicek, Nurettin
Korozlu, Alpan Bek, Mehmet Emre Taşgın, Fano Control of Unlocalized Nonlinear
Processes, Phys. Rev. B 104,
235407 (2021). arXiv:1905.01129
5.
Emre Yuce, Zafer
Artvin, Ramazan Sahin, Alpan Bek, Mehmet Emre Tasgin,
Ultra-large
actively tunable photonic band gaps via plasmon-analog of index enhancement,
Appl. Phys. Lett. 119,
211103 (2021). arXiv:2006.07132
6.
Rasim Volga Ovali, Ramazan Sahin, Alpan
Bek, Mehmet Emre Tasgin, Single-molecule-resolution
ultrafast near-field optical microscopy via plasmon lifetime extension,
Appl. Phys. Lett. 118, 241103
(2021).
7.
M. E. Tasgin, Negative
superluminal velocity and violation of Kramers-Kronig
relations in causal optical setups, Phys. Rev. A 103, 013504 (2021). arXiv:2009.13625
8.
Zafer Artvin,
Mehmet Günay, Alpan Bek and Mehmet Emre Tasgin, Fano-control
of down-conversion in a nonlinear crystal via plasmonic-quantum emitter hybrid
structures, Journal of Optical Society of America B 37,3769 (2020). arXiv:1805.01148
9.
M.
E. Tasgin, Single-mode
nonclassicality criteria via Holstein-Primakoff
transformation, J.
Phys. B: At. Mol. Opt. Phys. 53 245501
(2020). arXiv:1502.00988
10.
M.
E. Tasgin, Measuring
nonclassicality of single-mode states, J. Phys. B: At. Mol. Opt. Phys. 53, 175501 (2020). arXiv:1502.00992.
11. Mehmet Emre Tasgin, Mehmet Gunay and M. Suhail Zubairy, Nonclassicality
and entanglement for wavepackets, Phys. Rev.
A 101, 062316 (2020). arXiv:1904.13149
12.
Mehmet Günay,
You-Lin Chuang, M. Emre Tasgin, Continuously-tunable Cherenkov-radiation-based particle detectors
via plasmon index control, Nanophotonics 9, 1479 (2020). arXiv:1911.08159
13.
Mehmet Günay,
Vasilios Karanikolas, Ramazan Sahin, Rasim Volga
Ovali, Alpan Bek, Mehmet Emre Tasgin, Quantum
emitter interacting with graphene coating in the strong-coupling regime,
Phys. Rev. B 101, 165412
(2020). arXiv:1906.04434
14.
Bilge
Can Yildiz, Alpan
Bek and Mehmet Emre Tasgin, Plasmon
lifetime enhancement in a bright-dark mode coupled system, Phys. Rev. B 101,
035416 (2020). arXiv:1905.07248
15.
Mehmet Emre
Tasgin and M. Suhail Zubairy, Quantifications
for multi-mode entanglement, Phys. Rev. A 101, 012324 (2020). arXiv:1905.01740
16. Mehmet Günay*, Zafer Artvin,
Alpan Bek, Mehmet Emre Tasgin, Controlling
steady-state second harmonic signal via linear and nonlinear Fano resonances, Journal of
Modern Optics 67, 26-34 (2020).
17. Mehmet Günay, Özgür Esat
Müstecaplıoğlu and Mehmet Emre Tasgin, Entanglement
of two interacting ensembles via a Dicke-like quantum phase transition,
Phys. Rev. A 100, 063838
(2019). arXiv:1904.12668
18.
Selen Postaci, Bilge Can Yildiz, Alpan Bek, Mehmet Emre Tasgin, Silent
enhancement of SERS signal without increasing the hot spot intensity,
Nanophotonics 7, 16871695 2018.
19.
Mehmet Emre Tasgin, Many-particle entanglement criterion for superradiant-like
states, Phys. Rev. Lett. 119, 033601 (2017). arXiv:1610.06883
20.
Priyam Das, Mehmet Emre Tasgin*, Ozgur E. Mustecaplioglu, Collectively induced many-vortices topology via rotatory Dicke quantum
phase transition, New J. Phys. 18, 093022 (2016). arXiv:1601.06413
21.
M. E. Tasgin*, I. Salakhutdinov,
D. Kendziora, M. K. Abak, D. Turkpence,
L. Piantanida, L. Fruk, M. Lazzarino, Alpan Bek, Fluorescence Excitation by Enhanced Plasmon Upconversion
under Continuous Wave Illumination,
Photonics and Nanostructures - Fundamentals and
Applications 21, 32 (2016).
22.
Shailendra K. Singh, M.
Kurtulus Abak, and Mehmet Emre Tasgin* , Enhancement of Four-Wave Mixing via interference of multiple plasmonic
conversion paths, Phys. Rev. B 93, 035410 (2016). arXiv:1507.07734
23.
Wenchao Ge, Mehmet Emre Tasgin*, M.
Suhail Zubairy, Conservation relation of nonclassicality and entanglement for Gaussian
states in a beam splitter,
Phys. Rev. A 92, 052328 (2015). arXiv:1506.04937
24.
Bilge Can Yildiz*,
Mehmet Emre Tasgin, Musa Kurtulus Abak, Sahin Coskun, Husnu
Emrah Unalan, Alpan Bek, Enhanced Second Harmonic Generation from Coupled Asymmetric Plasmonic Metal
Nanostructures, J. Opt. 17, 125005 (2015). arXiv:1412.0238 (invited to Journal of Optics from arXiv)
25.
D. Turkpence, Gursoy
B. Akguc, Alpan Bek, M. E. Tasgin* , Engineering
nonlinear response of nanomaterials using Fano resonances, J. Opt. 16,
105009 (2014).
26.
M.E. Tasgin, Metal
nanoparticle plasmons operating within quantum lifetime, Nanoscale 5, 8616 (2013).
27. M. E. Tasgin, Testing
the reliability of a velocity definition in dispersive medium, Physical
Review A 86, 033833 (2012).
Can propagation speed
of light really be superluminal (v>c) in dispersive medium?
The famous experiment [1], where a
Gaussian light pulse passes through a dye solution with a speed which is larger
than the one in vacuum (c), aroused great interest in the scientific
community. Moreover, the theoretical
simulations ─regarding velocities deduced by tracking the peak of the
pulse [2] or the averaged center of the pulse [3] ─ were in good
agreement with the experiment. It is also argued that the superluminal-like
propagation could be originated from the reshaping of the pulse due to
absorption or gain present in the medium. The detectors used in the experiments
were already measuring the mean position of the pulse [4]. Superluminal
propagation could not be disproved, because one cannot decide on the reference
point which corresponds to the displacement of the wave packet.
In
the presented work [5], we adopt a method to check if pulse propagation is
indeed superluminal. We test if a velocity definition and the calculated speed
values are reliable in the superluminal propagation regime. We treat the same
problem in two different mathematical approaches; real-frequency (reel-ω)
and real-wavevector (real-k) Fourier expansions. If a given velocity definition (e.g. the one
which refers to the mean pulse center) is reliable, then it must result in
similar values for the velocity in the two approaches. However, we observe that
the velocities calculated in the two approaches differ significantly in the
superluminal regime. Therefore,
one cannot claim the existence of superluminal propagation.
[1] L. J.Wang,
A. Kuzmich, and A. Dogariu,
Nature (London) 406, 277 (2000). [2] M. Tanaka,M. Fujiwara, and H. Ikegami, Phys. Rev. A 34, 4851 (1986).
[3] J. Peatross, S. A. Glasgow, and M. Ware, Phys. Rev. Lett. 84, 2370 (2000).
[4] Lipsa Nanda, Aakash Basu,
and S. A. Ramakrishna, Phys. Rev. E 74, 036601 (2006). [5] M. E.
Taşgın, Phys. Rev. A 86, 033833 (2012).
28.
M.E. Taşgın,
Ö.E. Müstecaplıoğlu and L. You, Creation of a vortex in a Bose-Einstein condensate by superradiant
scattering, Physical Review A 84,
063628 (2011). (selected as the section cover in Optics and
Photonics News, OSA, in May 2013.)
29.
M.E. Taşgın* and P. Meystre, Spin squeezing with coherent light via entanglement swapping, Physical Review A 83, 053848
(2011).
30. S.K. Steinke, S. Singh, M.E. Taşgın, P. Meystre,
K.C. Schwab, M. Vengalattore, Quantum measurement backaction from a BEC coupled to a mechanical
oscillator, Physical Review A 84,
023841 (2011).
31.
M.E. Taşgın, M.Ö. Oktel, L. You,
and Ö.E. Müstecaplıoğlu, Quantum correlated light pulses from sequential superradiance of a
condensate, Physical Review A, 79, 053603 (2009).
Selected for the May 2009 issue of Virtual Journal of Quantum Information.
32.
M.E. Taşgın, Ö.E.
Müstecaplıoğlu, and M.Ö. Oktel, Photonic band gap in the triangular lattice of Bose-Einstein-condensate
vortices, Physical Review A, 75, 063627 (2007).
33.
M.E. Taşgın, M.Ö. Oktel, L. You,
and Ö.E. Müstecaplıoğlu, Quantum Entanglement via Superradiance of a BoseEinstein Condensate, Laser Physics, 20, 700 (2010).
34.
M.E. Taşgın, B. Öztop, M.Ö. Oktel, and Ö.E. Müstecaplıoğlu, Quantum correlations among superradiant
Bose-Einstein condensate atoms, Optics and
Spectroscopy, 108, 433 (2010).
35.
M.E. Taşgın, Ö.E.
Müstecaplıoğlu, and M.Ö. Oktel, Vortex Lattice of a Bose-Einstein Condensate as a Photonic Band Gap
Material, Laser Physics, 19, 647 (2009).
36. M.E. Taşgın, A. L. Subaşı,
M.Ö. Oktel, and B. Tanatar, Vortices in trapped boson-fermion mixtures, Journal of Low Temperature Physics, 138,
611 (2005).
* Corresponding author.
Conference
proceedings:
M.E. Taşgın and M.Ö. Oktel, Dynamical instability of a two component Bose-Einstein Condensate in an
optical lattice, Journal of Physics: Conference Series, 36, 200 (2006).
Other
publications:
1.
M. E. Tasgin, The
Connection between real-ω and real-k approaches in an absorbing medium, Balkan Journal
of Electrical & Computer Engineering 1,
32 (2013).
Dissertation
Thesis
Quantum Entanglement and Light Propagation
Bose-Einstein
Condensate (BEC)
SOME POSTERS
1.
Quantum correlated
light pulses from sequential superradiance of a condensate,
M.E.
Taşgın, M.Ö. Oktel, Li You, and Ö.E. Müstecaplıoğlu
APS (American Physical Society)
March Meeting,
14-20 March 2009, Pittsburgh, PA,
USA. .pdf
2. Quantum Entanglement in quantum
collective phenomena
and Photonic Band Gaps in BEC vortex
lattices,
M.E.
Taşgın, M.Ö. Oktel, and Ö.E. Müstecaplıoğlu
ICQO (XII International Conference
on Quantum Optics and Quantum Information), September 20-23, 2008, Vilnius,
Lithuania.
3. Continuous variable atom-atom
entanglement
in the sequential superradiance of a Bose-Eintein
condensate
M.E.
Taşgın, M.Ö. Oktel, Li You, and Ö.E. Müstecaplıoğlu
YMF (XV. Conference on Condensed
Matter Physics)
7 November 2008, Bilkent,
Ankara, Turkey. .pdf
(Best poster award.)