Peel one strip of zest from a tangerine and reserve. Squeeze 1/4 cup juice from tangerine; shake juice with vodka, bitters, and ice in a shaker. Strain into martini glass. Discard ice.
Shake pomegranate juice with sugar in shaker until sugar is dissolved.
Add pomegranate mixture to the glass to create a sunrise effect. Garnish with zest.