Table 2 Average loss over a 24-h period between select pairs of major global cities for a constellation of 400 satellites (NR = NS = 20) at various altitudes.

From: Spooky action at a global distance: analysis of space-based entanglement distribution for the quantum internet

City pairs

Distance (km)

Average loss (dB)

  

500 km

1000 km

2000 km

3000 km

4000 km

5000 km

Toronto and New York City

551

45.1

52.0

60.9

66.7

71.1

74.6

Lijiang and Delingha

1200

50.6

52.9

60.5

66.3

70.7

74.3

Houston and Washington DC

1922

75.1

66.9

73.7

78.3

81.1

83.1

Sydney and Auckland

2156

65.5

59.3

62.9

67.6

71.6

74.9

New York City and London

5569

>90

>90

82.6

79.1

79.7

81.1

Singapore and Sydney

6306

>90

>90

>90

83.3

82.5

83.2

London and Mumbai

7191

>90

>90

>90

>90

89.0

88.3

  1. The following cities are included in the simulation: Toronto, New York City, London, Singapore, Sydney, Auckland, Rio de Janeiro, Baton Rouge, Mumbai, Johannesburg, Washington DC, Lijiang, Ngari, Delingha, Nanshan, Xinglong, and Houston.
Back to article page