{"id":1333,"date":"2022-01-26T19:09:37","date_gmt":"2022-01-26T19:09:37","guid":{"rendered":"https:\/\/cqe.mit.edu\/quarc2022\/?page_id=1333"},"modified":"2022-01-30T16:28:08","modified_gmt":"2022-01-30T16:28:08","slug":"justin-hou","status":"publish","type":"page","link":"https:\/\/cqe.mit.edu\/quarc2022\/justin-hou\/","title":{"rendered":"Justin Hou"},"content":{"rendered":"

[et_pb_section fb_built=”1″ custom_padding_last_edited=”on|tablet” admin_label=”Header” _builder_version=”4.12.1″ background_image=”https:\/\/cqe.mit.edu\/quarc2022\/wp-content\/uploads\/sites\/3\/2022\/01\/t1.jpg” parallax=”on” custom_margin=”|||” custom_margin_tablet=”|||0%” custom_margin_last_edited=”off|desktop” custom_padding=”0|0px|0px|0%|false|false” custom_padding_tablet=”|||0%” custom_padding_phone=”” global_colors_info=”{}”][et_pb_row column_structure=”2_5,3_5″ _builder_version=”4.12.1″ _module_preset=”default” background_color=”#FFFFFF” width=”100%” max_width=”75%” custom_padding=”|5%||5%|false|false” saved_tabs=”all” global_colors_info=”{}”][et_pb_column type=”2_5″ _builder_version=”4.12.1″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”https:\/\/cqe.mit.edu\/quarc2022\/wp-content\/uploads\/sites\/3\/2021\/11\/quarc2022_logo1.png” title_text=”quarc2022_logo(1)” _builder_version=”4.12.1″ _module_preset=”default” module_alignment=”center” custom_css_main_element=”max-width:75%;||width:auto;” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][et_pb_column type=”3_5″ _builder_version=”4.12.1″ _module_preset=”default” global_colors_info=”{}”][et_pb_menu menu_id=”9″ _builder_version=”4.12.1″ _module_preset=”default” menu_font=”|700|||||||” menu_font_size=”13px” custom_margin=”||||false|false” custom_padding=”3%||||false|false” custom_css_main_element=”display:flex;” global_colors_info=”{}”][\/et_pb_menu][\/et_pb_column][\/et_pb_row][et_pb_row use_custom_gutter=”on” gutter_width=”1″ _builder_version=”4.12.1″ background_color=”#FFFFFF” width=”100%” max_width=”75%” module_alignment=”center” custom_padding=”|10%||10%|true|false” hover_enabled=”0″ use_custom_width=”on” width_unit=”off” custom_width_percent=”100%” global_colors_info=”{}” sticky_enabled=”0″][et_pb_column type=”4_4″ _builder_version=”3.25″ custom_padding=”15%|||” custom_padding_tablet=”0px|||” custom_padding_phone=”0px|||” custom_padding_last_edited=”on|tablet” global_colors_info=”{}” padding_tablet=”0px|||” padding_last_edited=”on|tablet” custom_padding__hover=”|||” padding_phone=”0px|||”][et_pb_text _builder_version=”4.12.1″ text_font=”||||||||” text_font_size=”16px” text_line_height=”2em” header_font=”Ubuntu|700|||||||” header_font_size=”60px” header_line_height=”1.4em” header_3_font=”Ubuntu||||||||” header_3_line_height=”1.8em” header_6_font=”Lato|700|||||||” header_6_font_size=”18px” header_6_line_height=”1.8em” background_color=”#6e8cc9″ background_layout=”dark” custom_padding=”10%|10%|10%|10%|true|true” custom_padding_phone=”80px|2vw||2vw||true” custom_padding_last_edited=”off|desktop” animation_style=”slide” animation_direction=”top” animation_intensity_slide=”2%” hover_enabled=”0″ text_font_size_tablet=”” text_font_size_phone=”14px” text_font_size_last_edited=”on|desktop” header_font_size_tablet=”” header_font_size_phone=”32px” header_font_size_last_edited=”on|desktop” global_colors_info=”{}” custom_margin=”||5%||false|false” sticky_enabled=”0″]<\/p>\n

Proposal for a Spin-Torque-Oscillator Maser Enabled by Microwave Photon-Spin Coupling<\/strong><\/h3>\n

<\/strong><\/p>\n

<\/strong><\/h4>\n

<\/strong><\/h4>\n
Justin T. Hou | Pengxiang Zhang | Luqiao Liu<\/strong><\/strong><\/h5>\n

<\/h4>\n

Spin-torque oscillators (STOs) have found applications in microwave generation, detection, and neuromorphic computing. Despite extensive studies in the past 20 years, the active region of a single STO is still limited to the nanometer scale due to inevitable magnon-magnon scatterings. Because of the small size, a single STO suffers from low output power and a broadened linewidth due to thermal fluctuations.
In this work, we propose a novel microwave generation device enabled by spin-photon coupling\u2014a spin-torque-oscillator maser, by placing a STO inside a microwave photon cavity. With numerical simulation and analytical proof, we show that highly coherent magnetic self-oscillation with high power and a narrow linewidth can be realized in a large area ferromagnetic thin film, breaking the limitations on conventional STOs. Our theoretical proposal represents a step towards the experimental realization of an on-chip, scalable, electrically-driven, continuous-wave maser for applications in both the classical and the quantum electronics domains.<\/p>\n

 <\/p>\n

Funding Sources: Air Force Office of Scientific Research (AFOSR) Grant No. FA9550-19-1-0048 | National Science Foundation (NSF) Grant No. ECCS-1653553 | Mathworks Fellowship<\/p>\n

[\/et_pb_text][et_pb_image src=”https:\/\/cqe.mit.edu\/quarc2022\/wp-content\/uploads\/sites\/3\/2021\/12\/quarc2022_image_jthou.png” title_text=”quarc2022_image_jthou” align=”center” align_tablet=”center” align_phone=”center” align_last_edited=”on|desktop” _builder_version=”4.12.1″ max_width=”95%” module_alignment=”center” animation_style=”slide” border_width_all=”2px” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”1_2,1_2″ use_custom_gutter=”on” gutter_width=”1″ _builder_version=”4.12.1″ background_color=”#FFFFFF” width=”100%” max_width=”75%” module_alignment=”center” custom_padding=”5%|5%|5%|5%|true|false” use_custom_width=”on” width_unit=”off” custom_width_percent=”100%” global_colors_info=”{}”][et_pb_column type=”1_2″ _builder_version=”3.25″ custom_padding=”15%|||” custom_padding_tablet=”0px|||” custom_padding_phone=”0px|||” custom_padding_last_edited=”on|tablet” global_colors_info=”{}” padding_tablet=”0px|||” padding_last_edited=”on|tablet” custom_padding__hover=”|||” padding_phone=”0px|||”][et_pb_text _builder_version=”4.12.1″ text_font=”||||||||” text_font_size=”16px” text_line_height=”2em” header_font=”Ubuntu|700|||||||” header_font_size=”60px” header_line_height=”1.4em” header_3_font=”Ubuntu||||||||” header_3_line_height=”1.8em” header_6_font=”Lato|700|||||||” header_6_font_size=”18px” header_6_line_height=”1.8em” background_color=”#96a6bd” background_layout=”dark” custom_padding=”10%|10%|10%|10%|true|true” custom_padding_phone=”80px|2vw||2vw||true” custom_padding_last_edited=”off|desktop” animation_style=”slide” animation_direction=”top” animation_intensity_slide=”2%” hover_enabled=”0″ text_font_size_tablet=”” text_font_size_phone=”14px” text_font_size_last_edited=”on|desktop” header_font_size_tablet=”” header_font_size_phone=”32px” header_font_size_last_edited=”on|desktop” global_colors_info=”{}” custom_css_main_element=”display:flex;” sticky_enabled=”0″]<\/p>\n

Justin Hou<\/strong><\/h1>\n

Affiliation: MIT, Graduate Student<\/strong><\/strong><\/h2>\n

Areas of Research<\/strong><\/h2>\n
    \n
  • \n
      \n
    • Spintronics (magnon-photon hybrid system)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

      Open to<\/strong><\/h2>\n
        \n
      • \n
          \n
        • Full-time positions<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

          [\/et_pb_text][\/et_pb_column][et_pb_column type=”1_2″ _builder_version=”3.25″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_image src=”https:\/\/cqe.mit.edu\/quarc2022\/wp-content\/uploads\/sites\/3\/2021\/12\/quarc2022_headshot_jthou.png” title_text=”quarc2022_headshot_jthou” align=”center” align_tablet=”center” align_phone=”center” align_last_edited=”on|desktop” _builder_version=”4.12.1″ max_width=”100%” module_alignment=”center” animation_style=”slide” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"

          Proposal for a Spin-Torque-Oscillator Maser Enabled by Microwave Photon-Spin Coupling Justin T. Hou | Pengxiang Zhang | Luqiao Liu Spin-torque oscillators (STOs) have found applications in microwave generation, detection, and neuromorphic computing. Despite extensive studies in the past 20 years, the active region of a single STO is still limited to the nanometer scale due […]<\/p>\n","protected":false},"author":6,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-1333","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/cqe.mit.edu\/quarc2022\/wp-json\/wp\/v2\/pages\/1333","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cqe.mit.edu\/quarc2022\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/cqe.mit.edu\/quarc2022\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/cqe.mit.edu\/quarc2022\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/cqe.mit.edu\/quarc2022\/wp-json\/wp\/v2\/comments?post=1333"}],"version-history":[{"count":8,"href":"https:\/\/cqe.mit.edu\/quarc2022\/wp-json\/wp\/v2\/pages\/1333\/revisions"}],"predecessor-version":[{"id":1888,"href":"https:\/\/cqe.mit.edu\/quarc2022\/wp-json\/wp\/v2\/pages\/1333\/revisions\/1888"}],"wp:attachment":[{"href":"https:\/\/cqe.mit.edu\/quarc2022\/wp-json\/wp\/v2\/media?parent=1333"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}