File:Squeezed-light-timeline.svg
Summary
| Description |
English: Plot of the achieved amount of squeezing of optical light in published laboratory experiments vs the year of publication. The amount of squeezing is given in logarithmic units of dB. Values are the ones from raw measurements without correction for detection losses. This graphic may be updated by anyone using the code below, if data are missing or new data become available. |
| Date | |
| Source | Own work |
| Author | Geek3 |
| SVG development | |
| Source code | Python code#! /usr/bin/env python
# -*- coding:utf8 -*-
from datetime import datetime
import matplotlib.pyplot as plt
from math import *
def datetime2year(dt):
year_part = dt - datetime(year=dt.year, month=1, day=1)
year_length = datetime(year=dt.year+1, month=1, day=1) - datetime(year=dt.year, month=1, day=1)
return dt.year + year_part.total_seconds() / year_length.total_seconds()
# entries: [time, squeezing, uncertainty]
# If any publications which held the squeezing record at their time are missing,
# please add them and recompile the plot!
data = [
['1985-11-25', 0.3, 0.], # https://doi.org/10.1103/PhysRevLett.55.2409
['1986-11-17', 3.0, 0.4], # https://doi.org/10.1103/PhysRevLett.57.2520
['1987-03-09', 0.33, 0.], # https://doi.org/10.1103/PhysRevLett.58.1000
['1987-07-13', 1.0, 0.1], # https://doi.org/10.1103/PhysRevLett.59.198
['1987-11-09', 2.0, 0.], # https://doi.org/10.1103/PhysRevLett.59.2153
['1987-11-30', 0.6, 0.], # https://doi.org/10.1103/PhysRevLett.59.2566
['1988-11-01', 0.6, 0.1], # https://doi.org/10.1103/PhysRevA.38.4931
['1991-06-03', 8.3, 0.9], # https://doi.org/10.1103/PhysRevLett.66.2867
['1992-05-18', 3.1, 0.1], # https://doi.org/10.1103/PhysRevLett.68.3020
['1992-09-01', 6.0, 0.3], # https://doi.org/10.1007/BF00325016
['1995-11-01', 5.5, 0.2], # https://doi.org/10.1364/JOSAB.12.002304
['1997-05-29', 6., 0.25], # https://doi.org/10.1038/387471a0
['1998-09-21', 3.9, 0.2], # https://doi.org/10.1103/PhysRevLett.81.2446
['2006-08-10', 7.2, 0.2], # https://doi.org/10.1063/1.2335806
['2007-04-02', 9.01, 0.14], # https://doi.org/10.1364/OE.15.004321
['2008-01-23', 10., 0.], # https://doi.org/10.1103/PhysRevLett.100.033602
['2010-06-22', 12.7, 0.], # https://doi.org/10.1103/PhysRevLett.104.251102
['2011-12-01', 12.3, 0.2], # https://doi.org/10.1364/OE.19.025763
['2012-06-25', 11.6, 0.], # https://doi.org/10.1088/0264-9381/29/14/145015
['2016-09-06', 15., 0.], # https://doi.org/10.1103/PhysRevLett.117.110801
['2017-12-22', 13., 0.05] # https://doi.org/10.1364/OL.43.000110
]
years = [datetime2year(datetime.strptime(d[0], '%Y-%m-%d')) for d in data]
squeezing = [d[1] for d in data]
errs = [d[2] for d in data]
fig = plt.figure(figsize=(420 / 90.0, 320 / 90.0), dpi=72)
plt.errorbar(years, squeezing, yerr=errs, fmt='bo', markersize=5, capsize=2.4)
plt.grid(True)
plt.xlim(1985, 2020)
plt.ylim(ymin=0)
plt.xlabel('year')
plt.ylabel('squeezing [dB]')
plt.title('Experimentally achieved squeezing')
plt.tight_layout()
plt.savefig('Squeezed-light-timeline.svg')
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