Results 41 to 50 of about 1,230 (116)

Quantum-enhanced super-sensitivity of Mach–Zehnder interferometer using squeezed Kerr state

open access: yesAPL Quantum
We study the phase super–sensitivity of a Mach–Zehnder interferometer (MZI) with the squeezed Kerr state (SKS) and coherent state as the inputs. We discuss the lower bound in phase sensitivity by considering the quantum Fisher information and the ...
Dhiraj Yadav   +3 more
doaj   +1 more source

Pomeron evolution and squeezed states in quantum optics

open access: yesNuclear Physics B
We apply the formalism of coherent states in quantum optics to pomeron evolution and show that evolving squeezed pomeron states are equivalent to pomeron fan diagrams at the leading order of perturbative expansion.
Dima Cheskis, Alex Prygarin
doaj   +1 more source

Higher order terms for the quantum evolution of a Wick observable within the Hepp method</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>Cubo</i>, 2012 </span><br><span class="r_content">El metodo de Hepp describe en terminos de estados coherentes la dinamica en campo medio de bosones o la propagación semiclasica. Un punto clave es la evolución asintótica de observables de Wick bajo la evolucion dada por un Hamiltoniano cuadratico ...</span><br><span class="r_sub"><i>Sébastien Breteaux</i></span><br><small><a href="https://doaj.org/article/4b1de5db30a347e9a4f66db355c6c5b6" target="_blank" rel="nofollow" title="doaj.org/article/4b1de5db30a347e9a4f66db355c6c5b6">doaj</a> </small>   <br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.1007/JHEP10(2024)173" target="_blank" rel="nofollow">Entanglement entropy of a scalar field in a squeezed state</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>Journal of High Energy Physics</i></span><br><span class="r_content">We study the entanglement entropy within a spherical region for a free scalar field in a squeezed state in 3 + 1 dimensions. We show that, even for small squeezing, a volume term appears, whose coefficient is essentially independent of the field mass ...</span><br><span class="r_sub"><i>D. Katsinis, G. Pastras, N. Tetradis</i></span><br><small><a href="https://doaj.org/article/408645090ebf4f9181e4778bdc53340f" target="_blank" rel="nofollow" title="doaj.org/article/408645090ebf4f9181e4778bdc53340f">doaj</a> </small>   <div id="more_4" style="display:none"><a href="/sci_redir.php?doi=10.1007%2FJHEP10%282024%29173" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.1007/JHEP10(2024)173'); alert('Copied the doi');">copy doi</a> <small>(10.1007/JHEP10(2024)173)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_4')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.26565/2312-4334-2025-4-06" target="_blank" rel="nofollow">Squeezed Coherent States in Supersymmetric Quantum Mechanics with Position-Dependent Mass</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>East European Journal of Physics</i></span><br><span class="r_content">In this paper, we construct and analyze a class of squeezed coherent states within the framework of supersymmetric quantum mechanics (SUSYQM) involving a position-dependent mass (PDM).</span><br><span class="r_sub"><i>Daniel Sabi Takou<span id="ma_5" style="display:none">, Amidou Boukari, Assimiou Yarou Mora, Gabriel Y. H. Avossevou</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_5')">+3 more</a></small></i></span><br><small><a href="https://doaj.org/article/f867bf756da442e69f206738eda017d7" target="_blank" rel="nofollow" title="doaj.org/article/f867bf756da442e69f206738eda017d7">doaj</a> </small>   <div id="more_5" style="display:none"><a href="/sci_redir.php?doi=10.26565%2F2312-4334-2025-4-06" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.26565/2312-4334-2025-4-06'); alert('Copied the doi');">copy doi</a> <small>(10.26565/2312-4334-2025-4-06)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_5')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.1103/PhysRevResearch.6.043214" target="_blank" rel="nofollow">Quantum enhancement of spoofing detection with squeezed states of light</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>Physical Review Research</i></span><br><span class="r_content">We employ quantum state discrimination theory to establish the ultimate limit for spoofing detection in electromagnetic signals encoded with random quantum states.</span><br><span class="r_sub"><i>Tomás P. Espinoza<span id="ma_6" style="display:none">, Sebastian C. Carrasco, José Rogan, Juan Alejandro Valdivia, Vladimir S. Malinovsky</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_6')">+4 more</a></small></i></span><br><small><a href="https://doaj.org/article/98949afd28ab4130a2daccbf7aabd808" target="_blank" rel="nofollow" title="doaj.org/article/98949afd28ab4130a2daccbf7aabd808">doaj</a> </small>   <div id="more_6" style="display:none"><a href="/sci_redir.php?doi=10.1103%2FPhysRevResearch.6.043214" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.1103/PhysRevResearch.6.043214'); alert('Copied the doi');">copy doi</a> <small>(10.1103/PhysRevResearch.6.043214)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_6')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.3390/universe10100396" target="_blank" rel="nofollow">Introduction to Bell’s Inequality in Quantum Mechanics</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>Universe</i></span><br><span class="r_content">A pedagogical introduction to Bell’s inequality in Quantum Mechanics is presented. Several examples, ranging from spin 1/2 to coherent and squeezed states are worked out. The generalization to Mermin’s inequalities and to GHZ states is also outlined.</span><br><span class="r_sub"><i>Marcelo Santos Guimaraes<span id="ma_7" style="display:none">, Itzhak Roditi, Silvio Paolo Sorella</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_7')">+2 more</a></small></i></span><br><small><a href="https://doaj.org/article/1b9db484a8dc4900933f411ac918751f" target="_blank" rel="nofollow" title="doaj.org/article/1b9db484a8dc4900933f411ac918751f">doaj</a> </small>   <div id="more_7" style="display:none"><a href="/sci_redir.php?doi=10.3390%2Funiverse10100396" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.3390/universe10100396'); alert('Copied the doi');">copy doi</a> <small>(10.3390/universe10100396)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_7')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.1140/epjc/s10052-025-14413-5" target="_blank" rel="nofollow">Relative entropy of single-mode squeezed states in Quantum Field Theory</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>European Physical Journal C: Particles and Fields</i></span><br><span class="r_content">Utilizing the Tomita–Takesaki modular theory, we derive a closed-form analytic expression for the Araki–Uhlmann relative entropy between a single-mode squeezed state and the vacuum state in a free relativistic massive scalar Quantum Field Theory within ...</span><br><span class="r_sub"><i>Marcelo S. Guimaraes<span id="ma_8" style="display:none">, Itzhak Roditi, Silvio P. Sorella, Arthur F. Vieira</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_8')">+3 more</a></small></i></span><br><small><a href="https://doaj.org/article/9f74ceb4e2f74bcfa7815142b6cd974f" target="_blank" rel="nofollow" title="doaj.org/article/9f74ceb4e2f74bcfa7815142b6cd974f">doaj</a> </small>   <div id="more_8" style="display:none"><a href="/sci_redir.php?doi=10.1140%2Fepjc%2Fs10052-025-14413-5" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.1140/epjc/s10052-025-14413-5'); alert('Copied the doi');">copy doi</a> <small>(10.1140/epjc/s10052-025-14413-5)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_8')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.1103/49wr-wgf7" target="_blank" rel="nofollow">Fundamental limits on determination of photon number statistics from measurements with multiplexed on/off detectors</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>Physical Review Research</i></span><br><span class="r_content">We investigate fundamental bounds on the ability to determine photon number distribution and other related quantities from tomographically incomplete measurements with an array of M detectors that can only distinguish the absence or presence of photons ...</span><br><span class="r_sub"><i>Jaromír Fiurášek</i></span><br><small><a href="https://doaj.org/article/4e3442cdfbc24109a583781522909374" target="_blank" rel="nofollow" title="doaj.org/article/4e3442cdfbc24109a583781522909374">doaj</a> </small>   <div id="more_9" style="display:none"><a href="/sci_redir.php?doi=10.1103%2F49wr-wgf7" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.1103/49wr-wgf7'); alert('Copied the doi');">copy doi</a> <small>(10.1103/49wr-wgf7)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_9')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.1038/srep13974" target="_blank" rel="nofollow">Gaussian private quantum channel with squeezed coherent states.</a> <b><a href="https://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC4568492&blobtype=pdf" target="_blank" rel="nofollow">[PDF]</a></b> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>Sci Rep</i>, 2015 </span><br><span class="r_sub"><i>Jeong K, Kim J, Lee SY.</i></span><br><small><a href="https://europepmc.org/article/MED/26364893#free-full-text" target="_blank" rel="nofollow" title="europepmc.org/article/MED/26364893#free-full-text">europepmc</a> </small>   <div id="more_10" style="display:none"><a href="/sci_redir.php?doi=10.1038%2Fsrep13974" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.1038/srep13974'); alert('Copied the doi');">copy doi</a> <small>(10.1038/srep13974)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_10')">+1 more source</a></small><br></div><div class="r"><div style="margin-bottom:2px;overflow:hidden"><div style="display: inline-block; float: left; font-size: small; padding-right: 16px; margin-top: -1px; padding-bottom: 1px;"><a href="/q-physics/" class="suggestion"onclick="show_loader();"><b>physics</b></a><br/><a href="/q-coherent_states/" class="suggestion"onclick="show_loader();"><b>coherent states</b></a><br/><a href="/q-entanglement/" class="suggestion"onclick="show_loader();"><b>entanglement</b></a><br/></div><div style="display: inline-block; float: left; font-size: small; padding-right: 16px; margin-top: -1px; padding-bottom: 1px;"><a href="/q-medicine/" class="suggestion"onclick="show_loader();"><b>medicine</b></a><br/><a href="/q-squeezed_states/" class="suggestion"onclick="show_loader();"><b>squeezed states</b></a><br/><a href="/q-gaussian_states/" class="suggestion"onclick="show_loader();"><b>gaussian states</b></a><br/></div><div style="display: inline-block; 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